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A102317 Row sums of triangle A102316. 2
1, 2, 7, 40, 333, 3706, 52128, 891700, 18038217, 422455778, 11265993155, 337573337108, 11241696796572, 412291622024088, 16524941775629068, 719072894898300540, 33777207106037303457, 1704222469853179505170 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..17.

PROG

(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]))}

CROSSREFS

Cf. A102316.

Sequence in context: A166904 A105625 A135082 * A031973 A274279 A319945

Adjacent sequences:  A102314 A102315 A102316 * A102318 A102319 A102320

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Jan 04 2005

STATUS

approved

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Last modified May 28 10:32 EDT 2020. Contains 334681 sequences. (Running on oeis4.)