A048632 Differences between factorials and Xfactorials: A048631 - A000142.

0, 0, 0, 0, 0, 0, 448, 3136, 25088, 238080, 2780160, 32409600, 439263232, 5793579008, 84589174784, 1277254508544, 20436072136704, 347559326515200, 6269816107433984, 119673237950431232, 2402480754490605568, 50578266728651816960, 1116823836321860550656

Offset

0,7

Links

Table of n, a(n) for n=0..22.

Formula

a(n) = n! - Xfactorial(n).

Crossrefs

Cf. A000142, A048631.

Sequence in context: A194648 A348344 A234438 * A366815 A234428 A234424

Adjacent sequences: A048629 A048630 A048631 * A048633 A048634 A048635

Keyword

easy,nonn

Author

Antti Karttunen, Jul 14 1999

Status

approved