id:A085625 - OEIS Search Results

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Numbers that are the sum of 2 squares in exactly 2 ways.

+0
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25, 50, 65, 85, 100, 125, 130, 145, 169, 170, 185, 200, 205, 221, 225, 250, 260, 265, 289, 290, 305, 338, 340, 365, 370, 377, 400, 410, 442, 445, 450, 481, 485, 493, 500, 505, 520, 530, 533, 545, 565, 578, 580, 585, 610, 629, 676, 680, 685, 689, 697, 730 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`n such that A000161(n)=2.`
	EXAMPLE	`a(3)=65 because 65=8^2+1^2=7^2+4^2, a(4)=85=9^2+2^2=7^2+6^2`
	CROSSREFS	`Cf. A000161, A000446.` `Sequence in context: A033902 A009177 A118882 this_sequence A116490 A008607 A044077` `Adjacent sequences: A085622 A085623 A085624 this_sequence A085626 A085627 A085628`
	KEYWORD	`nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), Jul 09 2003`

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

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