A107973 - OEIS

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A107973

Numbers of the form a^2 + b for a= 21 to 40 and b= 20 to 1 step -1.

461, 503, 547, 593, 641, 691, 743, 797, 853, 911, 971, 1033, 1097, 1163, 1231, 1301, 1373, 1447, 1523, 1601 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`Complete list of 20 prime numbers also of the form n^2+n+41 for n=20 to 39`
	EXAMPLE	`2121+20=461` `2222+19=503` `23*23+18=547`
	CROSSREFS	`Sequence in context: A124694 A183964 A048923 * A142832 A138956 A107121` `Adjacent sequences: A107970 A107971 A107972 * A107974 A107975 A107976`
	KEYWORD	`fini,full,nonn`
	AUTHOR	`Pierre CAMI (pierre-cami(AT)bbox.fr), Jun 12 2005`

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.