A076674 - OEIS

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A076674

Smallest a(n)>a(n-1) such that a(n)^2+a(n-1)^2 is a perfect square, a(1)=9.

9, 12, 16, 30, 40, 42, 56, 90, 120, 126, 168, 224, 360, 378, 504, 550, 1320, 1386, 1848, 1989, 2652, 2961, 3948, 5264, 8052, 9711, 12948, 17264, 24852, 31311, 41748, 53289, 71052, 94736, 130548, 145061, 146280, 153594, 163392, 170280, 173290 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`The sequence is infinite.`
	FORMULA	`a(n)=A076671(n), n>1. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 20 2008]`
	CROSSREFS	`Cf. A076600.` `Sequence in context: A166136 A120154 A084375 * A176062 A027571 A154631` `Adjacent sequences: A076671 A076672 A076673 * A076675 A076676 A076677`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Oct 25 2002`

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