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A193563 a(0) = 0, a(n) = n^2 * (a(n-1) + 1). 1
0, 1, 8, 81, 1312, 32825, 1181736, 57905113, 3705927296, 300180111057, 30018011105800, 3632179343801921, 523033825507476768, 88392716510763573961, 17324972436109660496552, 3898118798124673611724425, 997918412319916444601453056 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..16.

MAPLE

seq(n!^2*add(1/k!^2, k=0..n-1), n=0..16);   # Mark van Hoeij, May 13 2013

PROG

(PARI) a=[0]; for(n=1, 20, a=concat(a, (a[#a]+1)*n^2)); a \\ Charles R Greathouse IV, Jul 31 2011

CROSSREFS

Cf. A007526 (multiply by n instead of n^2).

Sequence in context: A092366 A022519 A138439 * A026845 A305770 A145921

Adjacent sequences:  A193560 A193561 A193562 * A193564 A193565 A193566

KEYWORD

nonn,easy

AUTHOR

Meherzad Lahewala, Jul 31 2011

STATUS

approved

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Last modified September 24 13:24 EDT 2022. Contains 356932 sequences. (Running on oeis4.)