a(n) = 6^(n-4) * (n+1)^(n-6) * (125*n^4 + 810*n^3 + 2095*n^2 + 2586*n + 1296).
A251586
a(n) = 6^(n-4) * (n+1)^(n-6) * (125*n^4 + 810*n^3 + 2095*n^2 + 2586*n + 1296).
Terms
- a(0) =1a(1) =1a(2) =8a(3) =156a(4) =5160a(5) =245976a(6) =15450912a(7) =1209613824a(8) =113666333184
External references
- oeis: A251586