127156575521
domain: N
Appears in sequences
- a(n) = (1 - (-5)^n)/6.at n=16A014986
- Linear 2nd order recurrence: a(n) = 4*a(n-1) + 5*a(n-2).at n=17A015531
- Cyclotomic polynomials at x=-5.at n=17A020504
- a(n) = (5*5^n + (-1)^n)/6.at n=16A083425
- Expansion of (1-4*x-x^2)/((1-x)*(1-4*x-5*x^2)).at n=17A100284
- a(n) = p(0,n), where p(x,n) is the strong divisibility sequence of polynomials based on sqrt(5) as in A327322.at n=16A329011