167936

Appears in sequences

• Expansion of e.g.f. sin(x)/cosh(tan(x)) (odd powers only).at n=5A009559
• a(n) = (3*n-1) * 2^(n-2).at n=13A053220
• a(n) = 2^n*(n^2 - n + 8)/8.at n=13A081908
• a(n) = 2^(n-1) * prime(n).at n=12A110295
• Expansion of q * psi(q^8) / phi(-q) in powers of q where psi(), phi() are Ramanujan theta functions.at n=31A123655
• Record values in A003415 (arithmetic derivative).at n=41A131116
• Numbers with 26 divisors.at n=11A137489
• Second arithmetic derivative of squares of prime powers: a(n)=A068346(A056798(n)).at n=27A192084
• (n-1)-st elementary symmetric function of the first n terms of (1,2,1,2,1,2,1,2,1,2,...)=A000034.at n=26A203150
• Smallest Product_{i:lambda} prime(i) for any perfect partition lambda of n.at n=25A259939
• a(n) = A341886(n)/2; numbers k such that A307437(k) is even.at n=30A341887
• Heinz numbers of integer partitions whose product equals their length.at n=21A353699
• a(n) is the numerator of the ratio of winning probabilities P_A/P_B of winning in a 2-player game with a ratio of odds for A and B in a single round of 2:1. To win the game it is necessary to win n rounds in a row.at n=7A370823