a(n) = Sum_{k=0..n} n^(n-k)*binomial(n+k-1,k).
A293574
a(n) = Sum_{k=0..n} n^(n-k)*binomial(n+k-1,k).
Terms
- a(0) =1a(1) =2a(2) =11a(3) =82a(4) =787a(5) =9476a(6) =139134a(7) =2422218a(8) =48824675a(9) =1118286172a(10) =28679699578a(11) =814027423892
External references
- oeis: A293574