A063101 a(n) is the number of divisors of n!*(n! + 1)/2.

1, 1, 2, 4, 18, 36, 96, 144, 336, 1120, 960, 960, 4320, 5760, 9504, 29568, 161280, 80640, 884736, 110592, 155520, 460800, 729600, 2188800, 929280, 1300992, 2040192, 1298304, 3528000, 14112000, 71884800, 71884800, 85708800, 243793920

Offset

0,3

Links

Harry J. Smith, Table of n, a(n) for n = 0..60

Prog

(PARI) a(n)={numdiv(n!*(n! + 1)/2)}

Crossrefs

Cf. A055555.

Sequence in context: A054300 A303360 A303442 * A343529 A143533 A064723

Adjacent sequences: A063098 A063099 A063100 * A063102 A063103 A063104

Keyword

nonn

Author

Jason Earls, Aug 07 2001

Status

approved