id:A025495 - OEIS Search Results

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Probable extension of A013704.

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2

1, 2, 12, 44, 100, 203, 344, 558, 824, 1189, 1620, 2176, 2812, 3599, 4480, 5538, 6704, 8073, 9564, 11284, 13140, 15251, 17512, 20054, 22760, 25773, 28964, 32488, 36204, 40279, 44560, 49226, 54112, 59409, 64940, 70908, 77124, 83803, 90744, 98174 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`For n >= 9, a(n) = 3a(n-1)-a(n-2)-5a(n-3)+5a(n-4)+a(n-5)-3a(n-6)+a(n-7).` `O.g.f.: (x^7-x^6+3x^5+7x^4+22x^3+7x^2+1)/((1+x)^2*(x-1)^4) . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 28 2008`
	CROSSREFS	`Sequence in context: A055681 A111389 A013704 this_sequence A028570 A009074 A066258` `Adjacent sequences: A025492 A025493 A025494 this_sequence A025496 A025497 A025498`
	KEYWORD	`nonn,easy`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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