A177138 Numbers of the form (n!*(n+1))/2 with n or (n+1) prime.

1, 3, 12, 60, 360, 2520, 20160, 19958400, 239500800, 3113510400, 43589145600, 177843714048000, 3201186852864000, 60822550204416000, 1216451004088320000, 12926008369442488320000, 310224200866619719680000, 4420880996869850977271808000000

Offset

1,2

Links

Table of n, a(n) for n=1..18.

Crossrefs

Cf. A001710.

Sequence in context: A077134 A001710 A105752 * A053532 A357594 A159867

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