A131478 - OEIS

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A131478

a(n)=ceiling(n^4/4).

0, 1, 4, 21, 64, 157, 324, 601, 1024, 1641, 2500, 3661, 5184, 7141, 9604, 12657, 16384, 20881, 26244, 32581, 40000, 48621, 58564, 69961, 82944, 97657, 114244, 132861, 153664, 176821, 202500, 230881, 262144, 296481, 334084, 375157 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 0..10000`
	FORMULA	`G.f.: x(1+10x^2+x^4)/((1-x)^5*(1+x)). a(n)+a(n+1)=A058919(n+1). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Dec 19 2008]`
	PROG	`(MAGMA) [Ceiling(n^4/4) : n in [0..50]]; // Vincenzo Librandi, Oct 01 2011`
	CROSSREFS	`Cf. A000982; A008619; A004526; A007590; A036487.` `Sequence in context: A033569 A201446 A135559 * A089893 A095668 A078800` `Adjacent sequences: A131475 A131476 A131477 * A131479 A131480 A131481`
	KEYWORD	`nonn`
	AUTHOR	`Mohammad K. Azarian (azarian(AT)evansville.edu), Jul 27 2007`

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Last modified February 14 19:37 EST 2012. Contains 205663 sequences.