32221
domain: N
Appears in sequences
- Numbers whose set of base-11 digits is {2,3}.at n=32A032811
- Numbers whose base-4 representation contains exactly four 1's and four 3's.at n=29A045133
- a(n) = p^2 + p + 1 where p runs through the primes.at n=40A060800
- Digit reversal of A096299(n).at n=24A096104
- Structured heptagonal anti-diamond numbers (vertex structure 7).at n=20A100186
- Period of the Lucas 3-step sequence A001644 mod prime(n).at n=40A106294
- Period of the Fibonacci 3-step sequence A000073 mod prime(n).at n=40A106302
- E,g.f.: exp(1-sqrt(1-2*x-3*x^2)).at n=6A144575
- Reduced period of the Fibonacci 3-step sequence A000073 mod prime(n).at n=40A154753
- Number of nodes (or order) of a graph model obtained using an automata scheme on sets of order prime(n) >= 5 and in which all not halt states are linked by arcs (edges).at n=39A160772
- Numbers k such that k^p-p is prime, where p is product of the digits of k.at n=26A178328
- Number of permutations that avoid the consecutive pattern 1423.at n=8A201692
- Least integer k such that the n-th prime of form m^2+1 divides the composite number k^2+1.at n=32A255675
- a(n) = (3 * a(n-3) + a(n-1) * a(n-5)) / a(n-6), a(0) = a(1) = ... = a(5) = 1.at n=18A275176
- Intersection of A002061 and A016105.at n=37A370519