login
A228448
a(n) = floor(n!/3^n).
0
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
0,8
MATHEMATICA
Table[Floor[n!/3^n], {n, 0, 30}] (* Harvey P. Dale, May 24 2018 *)
PROG
(Python)
import math
for n in range(99): print str(math.factorial(n)/(3**n))+', ',
CROSSREFS
KEYWORD
nonn,less
AUTHOR
Alex Ratushnyak, Oct 27 2013
STATUS
approved