A061837 Numbers k such that (k+2)^2 | k!.

10, 13, 14, 16, 18, 19, 22, 23, 25, 26, 28, 30, 31, 33, 34, 37, 38, 40, 42, 43, 46, 47, 48, 49, 50, 52, 53, 54, 55, 58, 61, 62, 63, 64, 66, 67, 68, 70, 73, 74, 75, 76, 78, 79, 82, 83, 85, 86, 88, 89, 90, 91, 93, 94, 96, 97, 98, 100, 102, 103, 106, 108, 109, 110, 112, 113

Offset

1,1

Links

Seiichi Manyama, Table of n, a(n) for n = 1..10000

Mathematica

Select[ Range[150], IntegerQ[ #! / (# + 2)^2] &]

Crossrefs

Cf. A061838, A061840, A061841, A061842.

Sequence in context: A188643 A087140 A226778 * A256477 A247464 A219110

Adjacent sequences: A061834 A061835 A061836 * A061838 A061839 A061840

Keyword

nonn

Author

Robert G. Wilson v, Jun 22 2001

Status

approved