a(n) = Sum_{k=1..n} binomial(n*(m+1)-m*k-1, n-k)*k/(n*m-(m-1)*k), for m=7.

A376447

a(n) = Sum_{k=1..n} binomial(n*(m+1)-m*k-1, n-k)*k/(n*m-(m-1)*k), for m=7.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =11a(4) =113a(5) =1472a(6) =21375a(7) =330905a(8) =5348380a(9) =89188027a(10) =1522999490a(11) =26497322726a(12) =468008534344

External references