id:A103975 - OEIS Search Results

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Smaller side in (a,a+1,a+1)-integer triangle with integer area.

+0
5

16, 240, 3360, 46816, 652080, 9082320, 126500416, 1761923520, 24540428880, 341804080816, 4760716702560, 66308229755040, 923554499868016, 12863454768397200, 179164812257692800, 2495443916839302016 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = 15a(n-1) - 15a(n-2) + a(n-3) - Max Alekseyev (maxale(AT)gmail.com), May 31 2007` `a(n) = 2A120892(2n+1) - Max Alekseyev (maxale(AT)gmail.com), May 31 2007`
	CROSSREFS	`Cf. A102341, A103974, A016064, A011945, A103772.` `Equals (4/3) (A001570(n) - 1).` `Corresponding areas are given by A104008.` `Adjacent sequences: A103972 A103973 A103974 this_sequence A103976 A103977 A103978` `Sequence in context: A119463 A111096 A161591 this_sequence A060198 A097829 A010559`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Feb 23 2005`
	EXTENSIONS	`More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 24 2005`

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Last modified November 8 20:39 EST 2009. Contains 166234 sequences.

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