a(n) = Sum_{k=0..n} binomial(n+5*k+5,k).
A390389
a(n) = Sum_{k=0..n} binomial(n+5*k+5,k).
Terms
- a(0) =1a(1) =12a(2) =149a(3) =1938a(4) =25961a(5) =354543a(6) =4907672a(7) =68612316a(8) =966594646a(9) =13699722770a(10) =195123252547
External references
- oeis: A390389