a(n) = 10*binomial(9*n + 10, n)/(9*n + 10).
A232265
a(n) = 10*binomial(9*n + 10, n)/(9*n + 10).
Terms
- a(0) =1a(1) =10a(2) =135a(3) =2100a(4) =35475a(5) =632502a(6) =11714745a(7) =223198440a(8) =4346520750a(9) =86128357150
External references
- oeis: A232265