382358

Appears in sequences

• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=41A286781
• Column 5 of A286781.at n=3A286790
• Number of 6-element subsets of [n] whose sum is a triangular number.at n=37A320852
• a(n) = coefficient of x^n in the power series A(x) such that: x = Sum_{n=-oo..+oo} (-1)^n * x^n * (1 + x^n)^n * A(x)^n.at n=11A359721