id:A057103 - OEIS Search Results

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Triangle of congrua: T(n,k)=4nk(n^2-k^2) with n>k>0 and starting at T(2,1)=24. A055096(n)^2+a(n) is a square, as is A055096(n)^2-a(n).

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24, 96, 120, 240, 384, 336, 480, 840, 960, 720, 840, 1536, 1944, 1920, 1320, 1344, 2520, 3360, 3696, 3360, 2184, 2016, 3840, 5280, 6144, 6240, 5376, 3360, 2880, 5544, 7776, 9360, 10080, 9720, 8064, 4896, 3960, 7680, 10920, 13440, 15000, 15360 (list; table; graph; listen)

	OFFSET	`1,1`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.`
	EXAMPLE	`a(1)=T(2,1)=421*(4-1)=5^2-1^2=7^2-5^2=24`
	CROSSREFS	`Cf. possible congrua A057102. See also A055096.` `Sequence in context: A090214 A103251 A057102 this_sequence A055669 A042122 A042124` `Adjacent sequences: A057100 A057101 A057102 this_sequence A057104 A057105 A057106`
	KEYWORD	`nonn,tabl`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Aug 02 2000`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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