A269221 Factorial of the sum of decimal digits of n.

1, 1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3628800, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3628800, 39916800, 6, 24, 120, 720, 5040, 40320, 362880, 3628800, 39916800, 479001600, 24, 120, 720, 5040

Offset

0,3

Comments

Sequence A093659 is the binary (base 2) version.

Links

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Formula

a(n) = A000142(A007953(n)).

Mathematica

Table[Total[IntegerDigits[n]]!, {n, 0, 50}] (* Harvey P. Dale, Dec 19 2021 *)

Prog

(PARI) A269221(n)=sumdigits(n)!

Crossrefs

Cf. A000142, A007953, A113588, A166350, A093659.

Sequence in context: A072132 A230231 A066459 * A071937 A061602 A182287

Adjacent sequences: A269218 A269219 A269220 * A269222 A269223 A269224

Keyword

nonn,base

Author

M. F. Hasler, Mar 15 2016

Status

approved