24859

Properties

Appears in sequences

• Primes prime(k) for which A049076(k) = 4.at n=13A049080
• Primes for which A049076 >= 4.at n=21A049090
• Number of factorable subsets of a 1 X n uniform grid.at n=18A057765
• Smallest squarefree integer k such that Q(sqrt(k)) has class number n.at n=24A081363
• Primes p such that the p-1 digits of the ternary (base 3) expansion of k/p (for k=1,2,3,...,p-1) fit into the k-th row of a magic square grid of order p-1.at n=8A096660
• Expansion of 1/((1-x)*(1-x^2)*(1-x^3)*(1-x^4))^2.at n=26A117486
• Primes p such that continued fraction of (1 + sqrt(p))/2 has period 6: primes in A146331.at n=27A146351
• Middle of 3 consecutive prime numbers such that p1*p2*p3 + d1 + d2 - 1 = average of twin prime pairs, d1 (delta) = p2 - p1, d2 (delta) = p3 - p2.at n=8A153404
• Primes of the form 9n^2-8n+2.at n=10A154253
• Primes p of the form : p+p^2+p^3-+8=prime.at n=24A154823
• A triangular array distributing the values of sequence A120380.at n=17A160645
• a(n) = (4*n^3 - 6*n^2 + 8*n + 3)/3.at n=27A161712
• Smallest primes p = p(k) with (p(k)+p(k+1)+p(k+2))/15 an integer.at n=20A168556
• Prime numbers P such that 8*P^2-1 and 8*(8*P^2-1)^2-1 are also prime numbers.at n=40A245674
• Primes p such that 2*p + 11 is a square.at n=32A269784
• Least positive squarefree integer k such that Q(sqrt(k)) has a class number greater than that of any previous integer.at n=12A279908
• Partial sums of A299256.at n=25A299262
• Primes p such that A001175(p) = (p-1)/9.at n=13A308794
• Primes p such that A001177(p) = (p-1)/9.at n=10A308802
• Prime numbers with prime indices in A333243.at n=16A333244