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A284996
Floor(Gamma(n/3)).
2
2, 1, 1, 0, 0, 1, 1, 1, 2, 2, 4, 6, 9, 14, 24, 40, 68, 120, 214, 389, 720, 1355, 2593, 5040, 9940, 19884, 40320, 82834, 172328, 362880, 773118, 1665837, 3628800, 7988887, 17768938, 39916800, 90540729, 207304278, 479001600, 1116669003, 2625854188, 6227020800
OFFSET
1,1
COMMENTS
There are two integer-valued interpolations between successive factorials.
LINKS
FORMULA
a(n) = floor(Gamma(n/3)).
MATHEMATICA
Table[Floor[Gamma[n/3]], {n, 1, 35}]
CROSSREFS
Sequence in context: A016004 A327802 A359249 * A215029 A362832 A368751
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Apr 08 2017
STATUS
approved