41715

Appears in sequences

• Triangulations of the disk G_{3,n}.at n=6A005499
• Number of partitions of n that do not contain 2 as a part.at n=48A027336
• Number of partitions of n-th composite number not containing the smallest prime factor.at n=31A091094
• Numbers k such that 2*k+1, 4*k+1, 8*k+1 and 16*k+1 are primes.at n=31A124412
• Numbers k such that 2*k+1, 4*k+1, 8*k+1, 16*k+1 and 32*k+1 are primes.at n=8A124413
• a(n) = A002865(2*n-1)+A002865(2*n).at n=23A182845
• Number of 4-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-bishop's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions.at n=30A187608
• Square array T(n,m) (n>=0, m>=0) read by antidiagonals downwards giving number of rooted triangulations of type [n,m] up to orientation-preserving isomorphisms.at n=48A262586
• Expansion of Product_{k>=1} (1/(1 - x^k))^(sigma_0(k)^2).at n=15A301747