-6783
domain: Z
Appears in sequences
- Expansion of e.g.f. cos(sinh(x)/cos(x)), even powers only.at n=4A009064
- Expansion of e.g.f.: exp(sin(x)/cosh(x)).at n=8A009215
- Expansion of e.g.f. theta_3^(-17/2).at n=3A015693
- Expansion of (1-x)/(1-x+x^3).at n=66A078013
- a(n) = (-1)^(n+1) * n*(n-1)*(n-4)*(n+1)/12.at n=16A167387
- Row sums of number triangle A185962.at n=21A185963
- a(n) = 3*a(n-1) - 2*a(n-2) - a(n-3), with a(0)=1, a(1)=3 and a(2)=7.at n=14A368205