A066979 -id:A066979 - cp's OEIS frontend

A228448 a(n) = floor(n!/3^n).

1, 0, 0, 0, 0, 0, 0, 2, 6, 18, 61, 225, 901, 3905, 18226, 91134, 486048, 2754274, 16525645, 104662422, 697749481, 4884246371, 35817806721, 274603184861, 2196825478892, 18306878990770, 158659617920008, 1427936561280078, 13327407905280733, 128831609751047086

Offset: 0

Alex Ratushnyak, Oct 27 2013

Cf. A000142, A066979, A212309.

Table[Floor[n!/3^n],{n,0,30}] (* Harvey P. Dale, May 24 2018 *)

import math
for n in range(99): print(math.factorial(n)//(3**n), end=', ')

A228449 a(n) = floor(n! / 4^n).

Original entry on oeis.org

1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 9, 28, 92, 324, 1217, 4871, 20703, 93166, 442542, 2212711, 11616735, 63892044, 367379253, 2204275523, 13776722023, 89548693155, 604453678799, 4231175751597, 30676024199079, 230070181493096, 1783043906571497, 14264351252571976

Offset: 0

Alex Ratushnyak, Oct 27 2013

Cf. A000142, A066979, A212310.

Table[Floor[n!/4^n],{n,0,40}] (* Harvey P. Dale, Jun 07 2014 *)

import math
for n in range(99): print(math.factorial(n)//(4**n), end=', ')

cp's OEIS Frontend

A228448 a(n) = floor(n!/3^n).

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