id:A138381 - OEIS Search Results

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Numbers which are the sum of a strictly positive square and a square of a prime in two or more ways.

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50, 85, 125, 130, 170, 185, 205, 221, 250, 265, 290, 305, 338, 365, 370, 377, 410, 425, 445, 493, 530, 533, 545, 578, 610, 629, 650, 685, 725, 754, 845, 850, 890, 905, 962, 965, 970, 986, 1010, 1037, 1073, 1105, 1130, 1145, 1165, 1205, 1250, 1258, 1313 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Stephan Daniel, On the sum of a square and a square of a prime, Math. Proc. Cambr. Phil. Soc. vol. 131. no. 1 (2001) 1-22.` `Index entries for sequences related to sums of squares`
	EXAMPLE	`50 = 1^2+7^2 = 5^2+5^2. 85 = 6^2+7^2 = 9^2+2^2. 125 = 2^2+11^2 = 10^2+5^2.` `425 = 8^2+19^2 = 16^2+13^2 = 20^2+5^2 .`
	CROSSREFS	`Sequence in context: A146170 A071366 A045165 this_sequence A090997 A141757 A044139` `Adjacent sequences: A138378 A138379 A138380 this_sequence A138382 A138383 A138384`
	KEYWORD	`easy,nonn`
	AUTHOR	`R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 08 2008`
	EXTENSIONS	`Typo corrected by Zak Seidov, May 09 2008`

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Last modified December 17 19:39 EST 2009. Contains 170821 sequences.

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