id:A130481 - OEIS Search Results

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Sum {0<=k<=n, k mod 3} (Partial sums of A010872).

+0
26

0, 1, 3, 3, 4, 6, 6, 7, 9, 9, 10, 12, 12, 13, 15, 15, 16, 18, 18, 19, 21, 21, 22, 24, 24, 25, 27, 27, 28, 30, 30, 31, 33, 33, 34, 36, 36, 37, 39, 39, 40, 42, 42, 43, 45, 45, 46, 48, 48, 49, 51, 51, 52, 54, 54, 55, 57, 57, 58, 60, 60, 61, 63, 63, 64, 66, 66, 67, 69, 69, 70, 72, 72 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n)=3floor(n/3)+A010872(n)(A010872(n)+1)/2. G.f.: g(x)=(2x^2+x)/((1-x^3)(1-x)).`
	CROSSREFS	`Cf. A010872, A010873, A010874, A010875, A010876, A010877. A130482, A130483, A130484.` `Adjacent sequences: A130478 A130479 A130480 this_sequence A130482 A130483 A130484` `Sequence in context: A074883 A011762 A092200 this_sequence A098238 A088651 A023837`
	KEYWORD	`nonn`
	AUTHOR	`Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), May 29 2007`

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.

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