|
Search: id:A064144
|
|
|
| A064144 |
|
tau(n!+1) or number of divisors of n!+1. |
|
+0
2
|
|
| 2, 2, 2, 3, 3, 4, 3, 4, 8, 4, 2, 6, 4, 4, 8, 32, 8, 64, 4, 4, 8, 8, 12, 4, 4, 4, 2, 4, 8, 32, 16, 16, 32, 4, 32, 64, 2, 4, 16, 128, 2, 8, 16, 8, 8, 8, 16, 4, 32, 32, 64, 16, 16, 4, 4, 16, 8, 16, 4, 16, 16, 8, 32, 8
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
Hisanori Mishima, Factorizations of many number sequences
|
|
MATHEMATICA
|
Do[ Print[ DivisorSigma[0, n! + 1]], {n, 1, 40} ]
|
|
PROGRAM
|
(PARI) { f=1; for (n=1, 100, f*=n; write("b064144.txt", n, " ", numdiv(f + 1)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 09 2009]
|
|
CROSSREFS
|
Cf. A000005, A027423, A002981, A002982.
Sequence in context: A003050 A070868 A155216 this_sequence A077105 A153847 A096036
Adjacent sequences: A064141 A064142 A064143 this_sequence A064145 A064146 A064147
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 11 2001
|
|
EXTENSIONS
|
More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Oct 04 2001
23 more terms, a(42) - a(64), from Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 09 2009
|
|
|
Search completed in 0.002 seconds
|
