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A004786
6!(2n-7)!/n!(n-1)! is an integer.
0
4, 6, 7, 991, 2481, 3479, 6163, 6581, 8178, 8179, 9272, 10288, 12195, 13067, 13976, 15199, 15813, 16172, 18371, 18686, 18723, 18747, 19294, 19438, 19506, 23531, 26198, 26315, 26678, 27877, 28429, 30553, 30593, 30689, 31327, 31375, 32882, 33006, 33451
OFFSET
1,1
MATHEMATICA
Select[Range[10^4], IntegerQ[6! (2 # - 7)!/(#! (# - 1)!)] &] (* Arkadiusz Wesolowski, Sep 06 2011 *)
CROSSREFS
Sequence in context: A012760 A333742 A107648 * A263357 A195387 A326426
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from David W. Wilson, Dec 11 1999
Offset corrected and 2 initial terms added by Arkadiusz Wesolowski, Sep 06 2011
STATUS
approved