A102317 - OEIS

%I #9 Jul 19 2024 19:05:30

%S 1,2,7,40,333,3706,52128,891700,18038217,422455778,11265993155,

%T 337573337108,11241696796572,412291622024088,16524941775629068,

%U 719072894898300540,33777207106037303457,1704222469853179505170,91954474204022335742037,5285317768791730330402208

%N Row sums of triangle A102316.

%o (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]))}

%Y Cf. A102316.

%K nonn

%O 0,2

%A _Paul D. Hanna_, Jan 04 2005

%E More terms from _Robert C. Lyons_, Jul 19 2024