id:A131355 - OEIS Search Results

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Partial sums of A065423 plus one.

+0
1

1, 1, 1, 3, 4, 8, 10, 16, 19, 27, 31, 41, 46, 58, 64, 78, 85, 101, 109, 127, 136, 156, 166, 188, 199, 223, 235, 261, 274, 302, 316, 346, 361, 393, 409, 443, 460, 496, 514, 552, 571, 611, 631, 673, 694, 738, 760, 806, 829, 877, 901, 951, 976, 1028, 1054, 1108 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`G.f.:(1+2x^3+2x^4-2x^2)/((1+x)^2(1-x)^3). a(n)=a(n-1)+2a(n-2)-2a(n-3)-a(n-4)+a(n-5). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 17 2009]`
	MAPLE	`A065423 := proc(n) if n mod 2 <> 0 then n-1 ; else n/2-1 ; fi ; end: A131355 := proc(n) 1+add(A065423(i), i=1..n) ; end: seq(A131355(n), n=0..80) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 04 2007`
	CROSSREFS	`Cf. A065423.` `Sequence in context: A063414 A026494 A043306 this_sequence A092534 A005232 A165272` `Adjacent sequences: A131352 A131353 A131354 this_sequence A131356 A131357 A131358`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Sep 30 2007`
	EXTENSIONS	`More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 04 2007`

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Last modified March 20 09:10 EDT 2010. Contains 173642 sequences.

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