A131355 - OEIS

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A131355

Partial sums of A065423 plus one.

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; refs; listen; history; text; internal format)

	OFFSET	`0,4`
	LINKS	`Table of n, a(n) for n=0..55.`
	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, 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, Oct 04 2007`
	CROSSREFS	`Cf. A065423.` `Sequence in context: A063414 A026494 A043306 * A092534 A005232 A165272` `Adjacent sequences: A131352 A131353 A131354 * A131356 A131357 A131358`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz, Sep 30 2007`
	EXTENSIONS	`More terms from R. J. Mathar, Oct 04 2007`
	STATUS	`approved`

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Last modified May 23 22:29 EDT 2013. Contains 225613 sequences.