A263881 - OEIS

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A263881

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

1

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

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OFFSET

1,2

COMMENTS

Sequence linked to A050376.

LINKS

Table of n, a(n) for n=1..7.

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.

FORMULA

a(n)! = A169661(n).

CROSSREFS

Cf. A050376, A054861, A169661.

Sequence in context: A033495 A006877 A328832 * A208892 A085397 A307414

Adjacent sequences: A263878 A263879 A263880 * A263882 A263883 A263884

KEYWORD

nonn,fini,full

AUTHOR

Jonathan Sondow, Nov 17 2015

STATUS

approved