12933043200
domain: N
Appears in sequences
- Expansion of e.g.f. (2+x-x^2)/(1-x)^2.at n=12A052649
- a(n) = (2*n+1)*(n-1)!.at n=12A129326
- Number of ordered pairs of permutation functions f,g on a size n set where f(g(g(x))) = g(f(f(x))).at n=12A239836
- Denominators of coefficients in S(x) where: C(x)^(1/2) - S(x)^(1/2) = 1 such that C'(x)*S(x)^(1/2) = S'(x)*C(x)^(1/2) = 2*x*C(x).at n=11A299433