31915

Appears in sequences

• Expansion of (1-x^2)/(1-3*x-x^2+x^3).at n=9A061534
• Partial sums of A001158: Sum_{j=1..n} sigma_3(j).at n=17A064603
• Bond series for first parallel moment of hexagonal net.at n=21A120542
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n) - 1, where a(0) = 1, a(1) = 2, b(0) = 3, b(1) = 4, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=18A295963
• Ordered lone-child-avoiding trees where vertices have decreasing subtree sizes.at n=19A346787