A154359 - OEIS

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A154359

1250n^2 - 700n + 99.

99, 649, 3699, 9249, 17299, 27849, 40899, 56449, 74499, 95049, 118099, 143649, 171699, 202249, 235299, 270849, 308899, 349449, 392499, 438049, 486099, 536649, 589699, 645249, 703299, 763849, 826899, 892449, 960499, 1031049 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	COMMENTS	`The identity (1250n^2-700n+99)^2-(25n^2-14n+2)(250n-70)^2=1 can be written as a(n)^2-A154357(n)A154361(n)^2=1. See also the third comment in A154357.`
	LINKS	`Index to sequences with linear recurrences with constant coefficients, signature (3,-3,1).`
	FORMULA	`G.f.: (99+352x+2049x^2)/(1-x)^3. - Bruno Berselli, Dec 13 2011`
	CROSSREFS	`Sequence in context: A156757 A027579 A157659 * A185499 A061366 A177686` `Adjacent sequences: A154356 A154357 A154358 * A154360 A154361 A154362`
	KEYWORD	`nonn,easy`
	AUTHOR	`Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 08 2009`
	EXTENSIONS	`Edited by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Jul 29 2010` `Librandi's comment rewritten from Bruno Berselli, Dec 13 2011`

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Last modified February 14 16:29 EST 2012. Contains 205635 sequences.