Sequences

392,541 sequences

Primes p such that 6!+p is also prime.A033561
Primes p such that 6!+p is also prime.
a(n) = 2*n^3 + 1.A033562
a(n) = 2*n^3 + 1.
Primes in A001067.A033563
Primes in A001067.
a(n+1) = concatenation of a(n) and a(n)+1, with a(0)=1.A033564
a(n+1) = concatenation of a(n) and a(n)+1, with a(0)=1.
Partially directed animals on the square lattice.A033565
Partially directed animals on the square lattice.
a(n) = (2*n+1) * (4*n-1).A033566
a(n) = (2*n+1) * (4*n-1).
a(n) = (2*n-1)*(4*n-1).A033567
a(n) = (2*n-1)*(4*n-1).
Second pentagonal numbers with odd index: a(n) = (2*n-1)*(3*n-1).A033568
Second pentagonal numbers with odd index: a(n) = (2*n-1)*(3*n-1).
a(n) = (2*n - 1)*(3*n + 1).A033569
a(n) = (2*n - 1)*(3*n + 1).
Pentagonal numbers with odd index: a(n) = (2*n+1)*(3*n+1).A033570
Pentagonal numbers with odd index: a(n) = (2*n+1)*(3*n+1).
a(n) = (2*n + 1)*(5*n + 1).A033571
a(n) = (2*n + 1)*(5*n + 1).
a(n) = (2*n+1)*(7*n+1).A033572
a(n) = (2*n+1)*(7*n+1).
a(n) = (2*n+1)*(9*n+1).A033573
a(n) = (2*n+1)*(9*n+1).
a(n) = (2*n+1)*(10*n+1).A033574
a(n) = (2*n+1)*(10*n+1).
a(n) = (2*n+1)*(11*n+1).A033575
a(n) = (2*n+1)*(11*n+1).
a(n) = (2*n+1)*(12*n+1).A033576
a(n) = (2*n+1)*(12*n+1).
a(n) = (3*n+1)*(4*n+1).A033577
a(n) = (3*n+1)*(4*n+1).
a(n) = (3*n - 1)*(4*n - 1).A033578
a(n) = (3*n - 1)*(4*n - 1).
Four times pentagonal numbers: a(n) = 2*n*(3*n-1).A033579
Four times pentagonal numbers: a(n) = 2*n*(3*n-1).
Four times second pentagonal numbers: a(n) = 2*n*(3*n+1).A033580
Four times second pentagonal numbers: a(n) = 2*n*(3*n+1).
a(n) = 6*n^2.A033581
a(n) = 6*n^2.
a(n) = 7*n^2.A033582
a(n) = 7*n^2.
a(n) = 10*n^2.A033583
a(n) = 10*n^2.
a(n) = 11*n^2.A033584
a(n) = 11*n^2.
a(n) = 2*n*(4*n + 1).A033585
a(n) = 2*n*(4*n + 1).
a(n) = 4*n*(2*n + 1).A033586
a(n) = 4*n*(2*n + 1).
a(n) = 2*n*(4*n + 3).A033587
a(n) = 2*n*(4*n + 3).
Duplicate of A014635.A033588
Duplicate of A014635.
a(n) = (2*n-1)*(3*n-1)*(4*n-1).A033589
a(n) = (2*n-1)*(3*n-1)*(4*n-1).
a(n) = (2*n-1)*(3*n-1)*(4*n-1)*(5*n-1).A033590
a(n) = (2*n-1)*(3*n-1)*(4*n-1)*(5*n-1).
a(n) = (2*n+1)*(3*n+1)*(4*n+1).A033591
a(n) = (2*n+1)*(3*n+1)*(4*n+1).
a(n) = (2*n+1)*(3*n+1)*(4*n+1)*(5*n+1).A033592
a(n) = (2*n+1)*(3*n+1)*(4*n+1)*(5*n+1).
a(n) = (n-1)*(2*n-1)*(3*n-1)*(4*n-1).A033593
a(n) = (n-1)*(2*n-1)*(3*n-1)*(4*n-1).
a(n) = (n-1)*(2*n-1)*(3*n-1).A033594
a(n) = (n-1)*(2*n-1)*(3*n-1).
a(n) = (n^2-1)*(2*n^2-1).A033595
a(n) = (n^2-1)*(2*n^2-1).
a(n) = (n^2 - 1)*(n^2 - 3).A033596
a(n) = (n^2 - 1)*(n^2 - 3).
(nextprime(n)+prevprime(n))/2.A033597
(nextprime(n)+prevprime(n))/2.
Duplicate of A008084.A033598
Duplicate of A008084.
Coordination sequence T1 for Zeolite Code CFI.A033599
Coordination sequence T1 for Zeolite Code CFI.
Coordination sequence T2 for Zeolite Code CFI.A033600
Coordination sequence T2 for Zeolite Code CFI.
Coordination sequence T3 for Zeolite Code CFI.A033601
Coordination sequence T3 for Zeolite Code CFI.
Coordination sequence T4 for Zeolite Code CFI.A033602
Coordination sequence T4 for Zeolite Code CFI.
Coordination sequence T5 for Zeolite Code CFI.A033603
Coordination sequence T5 for Zeolite Code CFI.
Coordination sequence T1 for Zeolite Code SBE.A033604
Coordination sequence T1 for Zeolite Code SBE.
Coordination sequence T2 for Zeolite Code SBE.A033605
Coordination sequence T2 for Zeolite Code SBE.
Coordination sequence T3 for Zeolite Code SBE.A033606
Coordination sequence T3 for Zeolite Code SBE.
Coordination sequence T4 for Zeolite Code SBE.A033607
Coordination sequence T4 for Zeolite Code SBE.
Coordination sequence T1 for Zeolite Code SBS.A033608
Coordination sequence T1 for Zeolite Code SBS.
Coordination sequence T2 for Zeolite Code SBS.A033609
Coordination sequence T2 for Zeolite Code SBS.
Coordination sequence T3 for Zeolite Code SBS.A033610
Coordination sequence T3 for Zeolite Code SBS.