id:A056896 - OEIS Search Results

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Smallest prime which can be written as k^2+n.

+0
3

2, 2, 3, 5, 5, 7, 7, 17, 13, 11, 11, 13, 13, 23, 19, 17, 17, 19, 19, 29, 37, 23, 23, 73, 29, 107, 31, 29, 29, 31, 31, 41, 37, 43, 71, 37, 37, 47, 43, 41, 41, 43, 43, 53, 61, 47, 47, 73, 53, 59, 67, 53, 53, 79, 59, 137, 61, 59, 59, 61, 61, 71, 67, 73, 101, 67, 67, 149, 73, 71 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) =A056897(n)+n =A056898(n)^2+n . For p a prime: a(p)=p (and a(p-1)=p if p<>3)`
	EXAMPLE	`a(17)=8 because 17=3^2+8`
	CROSSREFS	`Cf. A000040, A002496, A056892-A056898.` `Sequence in context: A090473 A113636 A151800 this_sequence A089366 A113827 A033189` `Adjacent sequences: A056893 A056894 A056895 this_sequence A056897 A056898 A056899`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Jul 05 2000`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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