-619
domain: Z
Appears in sequences
- Row sums of inverse of sequence array for Euler phi function.at n=28A106480
- Triangle read by rows, T[n,2i-1]=2T[n-1,i],T[n,2i]=2k-1-2T[n-1,i].at n=40A138583
- a(n) = 6*n^3 - 263*n^2 + 3469*n - 12841.at n=18A218457
- a(n) = 137*n^2 - 4043*n + 27277.at n=11A267706
- The middle coefficient in the minimal polynomial for (2*cos(Pi/15))^n.at n=4A306611
- Array of coefficients of the minimal polynomial of (2*cos(Pi/15))^n, for n >= 1 (ascending powers).at n=22A307886
- Expansion of e.g.f. exp(4 * (1 - exp(-x)) + x).at n=6A335982
- a(n) = Sum_{d|n} (-1)^(d-1) * binomial(d+n/d-1, d).at n=35A338682
- G.f. satisfies A(x) = 1 + x/(1 + x^4)^2 * A(x/(1 + x^4)).at n=16A360901