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A036781 n + Sum_{k=0..n} k!. 2
1, 3, 6, 13, 38, 159, 880, 5921, 46242, 409123, 4037924, 43954725, 522956326, 6749977127, 93928268328, 1401602636329, 22324392524330, 378011820620331, 6780385526348332, 128425485935180333, 2561327494111820334, 53652269665821260335, 1177652997443428940336 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..400

MAPLE

a:= proc(n) option remember; `if`(n=0, 1, a(n-1)+1+n!) end:

seq(a(n), n=0..30);  # Alois P. Heinz, Jan 05 2015

CROSSREFS

A003422[ n ] + n.

Sequence in context: A053564 A264236 A216999 * A084816 A055738 A137584

Adjacent sequences:  A036778 A036779 A036780 * A036782 A036783 A036784

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified September 20 12:31 EDT 2017. Contains 292271 sequences.