a(n) = Sum_{k=0..n} binomial(5*n+1,k).
A386812
a(n) = Sum_{k=0..n} binomial(5*n+1,k).
Terms
- a(0) =1a(1) =7a(2) =67a(3) =697a(4) =7547a(5) =83682a(6) =942649a(7) =10739176a(8) =123388763a(9) =1427090845a(10) =16593192942a(11) =193774331494
External references
- oeis: A386812