a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(6*k,k) / (5*k + 1).
A346682
a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(6*k,k) / (5*k + 1).
Terms
- a(0) =1a(1) =0a(2) =6a(3) =45a(4) =461a(5) =5020a(6) =57812a(7) =691586a(8) =8512048a(9) =107095262a(10) =1371219004a(11) =17808830924a(12) =234048288772
External references
- oeis: A346682