a(n) = Sum_{k=0..n} Stirling2(n,k) * binomial(7*k,k) / (6*k + 1).
A346768
a(n) = Sum_{k=0..n} Stirling2(n,k) * binomial(7*k,k) / (6*k + 1).
Terms
- a(0) =1a(1) =1a(2) =8a(3) =92a(4) =1289a(5) =20518a(6) =358611a(7) =6749268a(8) =135095116a(9) =2851394415a(10) =63066764910
External references
- oeis: A346768