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A151816 n! - A001147(n)^2. 0
0, 1, 15, 495, 29295, 2735775, 370945575, 68916822975, 16813959537375, 5214921734397375, 2004231846526284375, 934957186489800849375, 520444368391989625959375, 340788940288324502208609375, 259324006920606914270844234375, 226933251813970116856323617109375, 226305693647403205116652558922109375 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

This was (incorrectly) proposed as a formula for A001818(2n).

LINKS

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

CROSSREFS

Sequence in context: A208624 A013433 A013435 * A013431 A013432 A285765

Adjacent sequences:  A151813 A151814 A151815 * A151817 A151818 A151819

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 03 2009

STATUS

approved

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Last modified March 30 09:41 EDT 2020. Contains 333125 sequences. (Running on oeis4.)