id:A130482 - OEIS Search Results

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Sum {0<=k<=n, k mod 4} (Partial sums of A010873).

+0
26

0, 1, 3, 6, 6, 7, 9, 12, 12, 13, 15, 18, 18, 19, 21, 24, 24, 25, 27, 30, 30, 31, 33, 36, 36, 37, 39, 42, 42, 43, 45, 48, 48, 49, 51, 54, 54, 55, 57, 60, 60, 61, 63, 66, 66, 67, 69, 72, 72, 73, 75, 78, 78, 79, 81, 84, 84, 85, 87, 90, 90, 91, 93, 96, 96, 97, 99, 102, 102, 103, 105 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n)=6floor(n/4)+A010873(n)(A010873(n)+1)/2. G.f.: g(x)=(3x^3+2x^2+x)/((1-x^4)(1-x)).`
	CROSSREFS	`Cf. A010872, A010874, A010875, A010876, A010877. A130481, A130483, A130484, A130485.` `Adjacent sequences: A130479 A130480 A130481 this_sequence A130483 A130484 A130485` `Sequence in context: A081289 A079093 A072910 this_sequence A025500 A135702 A108850`
	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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