id:A151799 - OEIS Search Results

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Version 2 of the "previous prime" function: largest prime < n.

+0
4

2, 3, 3, 5, 5, 7, 7, 7, 7, 11, 11, 13, 13, 13, 13, 17, 17, 19, 19, 19, 19, 23, 23, 23, 23, 23, 23, 29, 29, 31, 31, 31, 31, 31, 31, 37, 37, 37, 37, 41, 41, 43, 43, 43, 43, 47, 47, 47, 47, 47, 47, 53, 53, 53, 53, 53, 53, 59, 59, 61, 61, 61, 61, 61, 61, 67, 67, 67, 67, 71, 71, 73, 73, 73, 73 (list; graph; listen)

	OFFSET	`3,1`
	COMMENT	`Version 1 of the "previous prime" function is "largest prime <= n". This produces A007917, the same sequence of numerical values, except the offset (or indexing) starts at 2 instead of 3.` `Maple's "prevprime" function uses version 2.` `See A007917 for references and further information.`
	LINKS	`Daniel Forgues, Table of n, a(n) for n=3..100000`
	MAPLE	`A151799 := n-> prevprime(n);`
	CROSSREFS	`Cf. A000040, A007917, A007918, A151800.` `Sequence in context: A093074 A136548 A007917 this_sequence A093841 A091937 A113637` `Adjacent sequences: A151796 A151797 A151798 this_sequence A151800 A151801 A151802`
	KEYWORD	`nonn,easy,nice`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Jun 29 2009`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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