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A064145 tau(n!-1) or number of divisors of n!-1. +0
2
0, 1, 2, 2, 4, 2, 2, 4, 6, 4, 16, 2, 4, 2, 24, 4, 8, 8, 8, 4, 16, 8, 4, 4, 8, 4, 4, 16, 32, 2, 8, 2, 2, 4, 8, 4, 32, 2, 16, 4, 16, 16, 128, 16, 32, 32, 4, 16, 8, 4 (list; graph; listen)
OFFSET

1,3

LINKS

Hisanori Mishima, Factorizations of many number sequences

MATHEMATICA

Do[ Print[ DivisorSigma[0, n! - 1]], {n, 1, 40} ]

CROSSREFS

Cf. A000005, A027423, A002981, A002982.

Sequence in context: A127171 A118232 A115070 this_sequence A133946 A029640 A033722

Adjacent sequences: A064142 A064143 A064144 this_sequence A064146 A064147 A064148

KEYWORD

nonn

AUTHOR

Vladeta Jovovic (vladeta(AT)Eunet.yu), Sep 11 2001

EXTENSIONS

More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Oct 04 2001

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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