A334174 Numbers that can be written as a product of two or more consecutive factorial numbers.

1, 2, 12, 144, 288, 2880, 17280, 34560, 86400, 2073600, 3628800, 12441600, 24883200, 203212800, 435456000, 10450944000, 14631321600, 62705664000, 125411328000, 146313216000, 1316818944000, 17557585920000, 73741860864000, 144850083840000, 421382062080000

Offset

1,2

Links

David A. Corneth, Table of n, a(n) for n = 1..1803 (terms < 10^1000)

Eric Weisstein's World of Mathematics, Factorial Products

Index entries for sequences related to factorial numbers

Example

    1 = 0! * 1!;
    2 = 1! * 2!;
   12 = 2! * 3!;
  144 = 3! * 4!;
  288 = 2! * 3! * 4!.

Crossrefs

Cf. A000142, A000178, A001013, A010790, A034882, A045619, A058295, A334175.

Sequence in context: A087800 A009747 A208866 * A372993 A067601 A365284

Adjacent sequences: A334171 A334172 A334173 * A334175 A334176 A334177

Keyword

nonn

Author

Ilya Gutkovskiy, Apr 17 2020

Status

approved