id:A046923 - OEIS Search Results

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Number of ways to express 2n+1 as p+2a^2; p prime, a >= 0.

+0
5

0, 1, 2, 2, 1, 2, 3, 2, 1, 3, 3, 2, 3, 1, 2, 4, 1, 2, 4, 3, 2, 3, 3, 2, 4, 2, 2, 5, 1, 2, 6, 3, 1, 3, 4, 2, 4, 4, 2, 6, 3, 2, 4, 2, 3, 6, 2, 1, 4, 2, 4, 6, 4, 2, 6, 5, 2, 6, 3, 2, 5, 1, 2, 3, 4, 4, 5, 4, 1, 8, 4, 1, 6, 3, 2, 6, 2, 2, 6, 6, 1, 3, 5, 3, 7, 4, 3, 6, 2, 3, 10, 2, 3, 4, 4, 3, 3, 4, 2 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`The only zero terms appear to be for the odd numbers 1, 5777, and 5993. - T. D. Noe, Aug 23 2008 - Definition corrected by T. D. Noe, Aug 23 2008`
	LINKS	`T. D. Noe, Table of n, a(n) for n=0..10000` `L. Hodges, A lesser-known Goldbach conjecture, Math. Mag., 66 (1993), 45-47.` `Index entries for sequences related to Goldbach conjecture`
	CROSSREFS	`Sequence in context: A002345 A071694 A072781 this_sequence A056173 A027348 A023566` `Cf. A042978, A046920, A046921, A046922, A060003, A143539` `Adjacent sequences: A046920 A046921 A046922 this_sequence A046924 A046925 A046926`
	KEYWORD	`nonn,new`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`
	EXTENSIONS	`Definition corrected by T. D. Noe, Aug 23 2008`

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Last modified September 7 12:28 EDT 2008. Contains 143483 sequences.

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