-923
domain: Z
Appears in sequences
- Expansion of e.g.f. exp(x)*cosh(log(1+x)).at n=7A009281
- Expansion of 1/(1+x-2*x^2+2*x^3).at n=9A077970
- Diagonal sums of triangle A110324.at n=42A110326
- The r-th term of the n-th row of the following array contains the sum of r successively decreasing integers beginning from n. 0 < r <= n. Sequence contains the leading diagonal.at n=12A110427
- a(n) = a(n-2) - (n-3)*a(n-3), with a(0)=0, a(1)=1, a(2)=2.at n=15A122044
- Expansion of 1/(1-x*(1-7*x)).at n=7A145976
- Expansion of 1/(1-x(1-12x)).at n=6A146084
- Second differences of A000463; first differences of A188652.at n=42A188653
- G.f. A(x) satisfies: A(x) = 1 - Sum_{k=1..3} (x * A(x))^k.at n=15A337512
- a(n) = Sum_{d|n} mu(d) * binomial(d + n/d - 2, d-1).at n=48A338656
- Coefficients in the power series expansion of A(x) = Sum_{n=-oo..+oo} n*(n+1)*(n+2)/6 * x^(3*n) * (1 - x^n)^(n-2).at n=25A357156
- a(n) = Sum_{k=0..floor(n/2)} (-n)^k * binomial(n-k,k).at n=7A368894