id:A152895 - OEIS Search Results

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Partial sums of A152891.

+0
3

0, 2, 11, 40, 123, 349, 951, 2539, 6710, 17645, 46290, 121302, 317706, 831920, 2178173, 5702734, 14930181, 39087979, 102333945, 267914065, 701408480, 1836311627, 4807526676, 12586268700, 32951279748, 86267570894, 225851433311 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`G.f.: x^2(2-x)/((1-3x+x^2)(1-x)^3). a(n)=A001906(n+1)-A000217(n+1). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 08 2009]`
	MATHEMATICA	`lst={}; a=b=s=0; Do[b+=n+a; a+=n+b; s+=a; AppendTo[lst, s], {n, 0, 2*4!}]; lst`
	CROSSREFS	`Cf. A152891` `Sequence in context: A000175 A125064 A055329 this_sequence A000822 A154813 A080093` `Adjacent sequences: A152892 A152893 A152894 this_sequence A152896 A152897 A152898`
	KEYWORD	`nonn`
	AUTHOR	`Vladimir Orlovsky (4vladimir(AT)gmail.com), Dec 14 2008`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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