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A177138 a(n) = (n!*(n+1))/2 with n or (n+1) prime. 0
1, 3, 12, 60, 360, 2520, 20160, 19958400, 239500800, 3113510400, 43589145600, 177843714048000, 3201186852864000, 60822550204416000, 1216451004088320000, 12926008369442488320000, 310224200866619719680000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..17.

CROSSREFS

Cf. A001710.

Sequence in context: A077134 A001710 A105752 * A053532 A159867 A082278

Adjacent sequences:  A177135 A177136 A177137 * A177139 A177140 A177141

KEYWORD

nonn

AUTHOR

Giovanni Teofilatto, May 03 2010

EXTENSIONS

Corrected (1 inserted and a duplicate replaced) by R. J. Mathar, Jun 28 2010

STATUS

approved

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Last modified January 27 15:14 EST 2020. Contains 331295 sequences. (Running on oeis4.)