id:A107973 - OEIS Search Results

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

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

	OFFSET	`1,1`
	COMMENT	`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: A055159 A124694 A048923 this_sequence A142832 A138956 A107121` `Adjacent sequences: A107970 A107971 A107972 this_sequence A107974 A107975 A107976`
	KEYWORD	`fini,full,nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Jun 12 2005`

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