62814

Appears in sequences

• a(n) = Sum_{k=3..n} (k-1)!*C(n,k)/2.at n=9A002807
• Conjectured number of irreducible multiple zeta values of depth 9 and weight 2n+25.at n=17A022497
• Sum of three solutions of the Diophantine equation x^2 - y^2 = z^3.at n=19A085409
• A bisection of A002807.at n=4A099201
• G.f. satisfies: 1 = Sum_{n>=0} (-x)^(n*(n+1)/2) * A(x)^(3*n+1).at n=7A193113
• Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 0 vertically.at n=8A207113
• Expansion of Product_{k>=1} 1/(1 - sigma(k)*x^k), where sigma(k) is the sum of the divisors of k (A000203).at n=15A316961