id:A061555 - OEIS Search Results

Search: id:A061555

Displaying 1-1 of 1 results found.

page 1

Integer part of sigma(n!)/n!.

+0
1

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; listen)

	OFFSET	`0,4`
	LINKS	`Harry J. Smith, Table of n, a(n) for n=0,...,1000`
	FORMULA	`a(n)=Floor[DivisorSigma[1, n! ]/n! ]=Floor[A000203(A000142(n)]`
	EXAMPLE	`With increasing n, a(n) goes to infinity.`
	PROGRAM	`(PARI) { for (n=0, 1000, write("b061555.txt", n, " ", sigma(n!)\n!) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 24 2009]`
	CROSSREFS	`A000142, A000203.` `Sequence in context: A112751 A091194 A156079 this_sequence A146323 A071626 A106457` `Adjacent sequences: A061552 A061553 A061554 this_sequence A061556 A061557 A061558`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), May 17 2001`
	EXTENSIONS	`Terms corrected for an offset of 0 by Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 24 2009`

page 1

Search completed in 0.002 seconds

Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research