A263881 Numbers k such that k! is a "compact factorial", i.e., k! is in A169661.

1, 2, 3, 6, 7, 10, 11

Offset: 1

Author

Jonathan Sondow, Nov 17 2015

Keywords

• nonn
• fini
• full

Comments

Sequence linked to A050376.

Links

• T. M. Apostol, Review of "Compact integers and factorials" by V. Shevelev, zbMATH.
• Vladimir Shevelev, Compact integers and factorials, Acta Arith. 126 (2007), no.3, 195-236.

Crossrefs

Cf. A050376, A054861, A169661.

Formula

a(n)! = A169661(n).