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A061555
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Integer part of sigma(n!)/n!.
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1
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1, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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LINKS
| Harry J. Smith, Table of n, a(n) for n=0,...,1000
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FORMULA
| a(n)=Floor[DivisorSigma[1, n! ]/n! ]=Floor[A000203(A000142(n)]
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EXAMPLE
| With increasing n, a(n) goes to infinity.
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PROG
| (PARI) { for (n=0, 1000, write("b061555.txt", n, " ", sigma(n!)\n!) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 24 2009]
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CROSSREFS
| A000142, A000203.
Sequence in context: A112751 A091194 A156079 * A146323 A071626 A106457
Adjacent sequences: A061552 A061553 A061554 * A061556 A061557 A061558
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), May 17 2001
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EXTENSIONS
| Terms corrected for an offset of 0 by Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 24 2009
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