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Search: id:A063101
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| A063101 |
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Number of divisors of n!*(n!+1)/2. |
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+0
1
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| 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; listen)
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OFFSET
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0,3
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LINKS
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Harry J. Smith, Table of n, a(n) for n=0,...,60
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PROGRAM
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(PARI) for(n=0, 38, print(numdiv( (n!*(n!+1)/2))))
(PARI) { for (n=0, 60, if (n, f*=n, f=1); write("b063101.txt", n, " ", numdiv((f*(f + 1)/2))) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 18 2009]
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CROSSREFS
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Cf. A055555.
Sequence in context: A115987 A076692 A054300 this_sequence A143533 A064723 A151449
Adjacent sequences: A063098 A063099 A063100 this_sequence A063102 A063103 A063104
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Aug 07 2001
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