id:A014848 - OEIS Search Results

Search: id:A014848

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n^2 - [ n/2 ].

+0
6

0, 1, 3, 8, 14, 23, 33, 46, 60, 77, 95, 116, 138, 163, 189, 218, 248, 281, 315, 352, 390, 431, 473, 518, 564, 613, 663, 716, 770, 827, 885, 946, 1008, 1073, 1139, 1208, 1278, 1351, 1425, 1502, 1580, 1661, 1743, 1828, 1914, 2003, 2093, 2186, 2280, 2377, 2475 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`G.f.: x(1+x+2x^2)/((1-x)^2(1-x^2)).`
	PROGRAM	`(PARI) a(n)=n^2-n\2`
	CROSSREFS	`A033991(n)=a(2n). A033951(n)=a(2n+1).` `Sequence in context: A062550 A022947 A098762 this_sequence A140479 A062354 A135940` `Adjacent sequences: A014845 A014846 A014847 this_sequence A014849 A014850 A014851`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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