A102317 Row sums of triangle A102316.

1, 2, 7, 40, 333, 3706, 52128, 891700, 18038217, 422455778, 11265993155, 337573337108, 11241696796572, 412291622024088, 16524941775629068, 719072894898300540, 33777207106037303457, 1704222469853179505170, 91954474204022335742037, 5285317768791730330402208

Offset: 0

Author

Paul D. Hanna, Jan 04 2005

Keywords

• nonn

Crossrefs

Cf. A102316.

Programs

PARI

{a(n)=local(M=matrix(n+1,n+1));for(m=0,n, for(k=0,m, M[m+1,k+1]=if(m==0||k==0,1,M[m+1,k]+(k+1)*M[m,k+1]))); return(sum(i=0,n,M[n+1,i+1]))}

Extensions

More terms from Robert C. Lyons, Jul 19 2024