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A063101 a(n) is the number of divisors of n!*(n! + 1)/2. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
PROG
(PARI) a(n)={numdiv(n!*(n! + 1)/2)}
CROSSREFS
Cf. A055555.
Sequence in context: A054300 A303360 A303442 * A343529 A143533 A064723
KEYWORD
nonn
AUTHOR
Jason Earls, Aug 07 2001
STATUS
approved

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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)