id:A067707 - OEIS Search Results

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Numbers such that 12 (12 + n) is a perfect square.

+0
9

15, 36, 63, 96, 135, 180, 231, 288, 351, 420, 495, 576, 663, 756, 855, 960, 1071, 1188, 1311, 1440, 1575, 1716, 1863, 2016, 2175, 2340, 2511, 2688, 2871, 3060, 3255, 3456, 3663, 3876, 4095, 4320, 4551, 4788, 5031, 5280, 5535, 5796, 6063, 6336, 6615, 6900 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n+1)= 3nn +18*n +15 (frank.ellermann(AT)t-online.de).`
	MATHEMATICA	`Select[ Range[10000], IntegerQ[ Sqrt[ 12(12 + # )]] & ]`
	CROSSREFS	`Cf. A067724...A067728 (3, 5, 6, 7, 8), A067705 (11).` `Sequence in context: A134509 A062712 A033709 this_sequence A166146 A118867 A082112` `Adjacent sequences: A067704 A067705 A067706 this_sequence A067708 A067709 A067710`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Feb 05 2002`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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