login
A061840
Numbers k such that (k+4)^4 | k!.
5
20, 26, 28, 31, 32, 36, 38, 41, 44, 46, 50, 51, 52, 56, 59, 60, 61, 62, 66, 68, 71, 73, 74, 76, 77, 80, 81, 84, 86, 87, 91, 92, 94, 95, 96, 98, 100, 101, 104, 106, 108, 110, 111, 113, 115, 116, 117, 121, 122, 124, 126, 128, 129, 131, 132, 134, 136, 139, 140, 141
OFFSET
1,1
LINKS
MATHEMATICA
Select[ Range[150], IntegerQ[ #! / (# + 4)^4] &]
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Jun 22 2001
STATUS
approved