id:A117473 - OEIS Search Results

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The values of 'a' in a^2 + b^2 = c^2, where b - a = 17 and gcd(a,b,c)=1.

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7, 28, 88, 207, 555, 1248, 3276, 7315, 19135, 42676, 111568, 248775, 650307, 1450008, 3790308, 8451307, 22091575, 49257868, 128759176, 287095935, 750463515, 1673317776, 4374021948, 9752810755, 25493668207 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`b - a = 17 is the third term in A058529`
	FORMULA	`a(1)=7, a(2)=28, a(3)=207, a(4)=555, a(n)=6*a(n-2) - a(n-4) + 34`
	EXAMPLE	`a(5) = 6*88 - 7 + 34 = 555 and 555^2 + 572^2 = 797^2 and 572-555=17 and gcd(555, 572, 797) = 1`
	CROSSREFS	`Cf. A058529, A117472.` `Sequence in context: A144900 A054469 A156928 this_sequence A163037 A022572 A024207` `Adjacent sequences: A117470 A117471 A117472 this_sequence A117474 A117475 A117476`
	KEYWORD	`nonn`
	AUTHOR	`Andras Erszegi (erszegi.andras(AT)chello.hu), Mar 19 2006`

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

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