id:A068901 - OEIS Search Results

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Least number which when added to the n-th prime gives a multiple of n.

+0
4

0, 1, 1, 1, 4, 5, 4, 5, 4, 1, 2, 11, 11, 13, 13, 11, 9, 11, 9, 9, 11, 9, 9, 7, 3, 3, 5, 5, 7, 7, 28, 29, 28, 31, 26, 29, 28, 27, 28, 27, 26, 29, 24, 27, 28, 31, 24, 17, 18, 21, 22, 21, 24, 19, 18, 17, 16, 19, 18, 19, 22, 17, 8, 9, 12, 13, 4, 3, 67, 1 (list; graph; listen)

	OFFSET	`1,5`
	COMMENT	`Min{k \| n divides (prime(n)+k)}.` `a(n) = A068902(n) - A000040(n).`
	LINKS	`R. Zumkeller, Table of n, a(n) for n = 1..10000 [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 16 2009]`
	FORMULA	`n*ceil(prime(n)/n)-prime(n). - Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 06 2003`
	CROSSREFS	`A090973. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 16 2009]` `Sequence in context: A036444 A125583 A063694 this_sequence A010710 A021026 A126128` `Adjacent sequences: A068898 A068899 A068900 this_sequence A068902 A068903 A068904`
	KEYWORD	`nonn,nice`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 05 2002`

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Last modified November 24 14:25 EST 2009. Contains 167438 sequences.

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