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A112740 Row sums of number triangle A112739. 1
1, 2, 4, 7, 13, 26, 58, 147, 423, 1366, 4880, 19039, 80281, 362914, 1747598, 8918299, 48024291, 271891710, 1613325844, 10005690695, 64702147429, 435311589418, 3041246276098, 22024930755299, 165082467634303, 1278742554953574 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..25.

FORMULA

a(n)=sum{k=0..n, sum{j=0..k, (2-0^j)*(n-1)^(k-j)}}.

CROSSREFS

Sequence in context: A023431 A025246 A256942 * A265580 A136408 A317718

Adjacent sequences:  A112737 A112738 A112739 * A112741 A112742 A112743

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Sep 16 2005

STATUS

approved

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Last modified January 23 00:56 EST 2019. Contains 319365 sequences. (Running on oeis4.)