id:A130722 - OEIS Search Results

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The twice repeated integers at even indices, the non-repeated integers at odd indices.

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0, 0, 0, 1, 1, 2, 1, 3, 2, 4, 2, 5, 3, 6, 3, 7, 4, 8, 4, 9, 5, 10, 5, 11, 6, 12, 6, 13, 7, 14, 7, 15, 8, 16, 8, 17, 9, 18, 9, 19, 10, 20, 10, 21, 11, 22, 11, 23, 12, 24, 12, 25, 13, 26, 13, 27, 14, 28, 14, 29, 15, 30, 15, 31, 16, 32, 16, 33, 17, 34, 17, 35, 18, 36, 18, 37, 19, 38, 19, 39 (list; graph; listen)

	OFFSET	`0,6`
	FORMULA	`a(2n)=A004526(n). a(2n+1)= A001477(n) = n.` `O.g.f.: (x^2+x+1)x^3/[(x-1)^2(1+x)^2(1+x^2)]. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 07 2008`
	CROSSREFS	`Sequence in context: A123021 A028914 A106466 this_sequence A147541 A024162 A078658` `Adjacent sequences: A130719 A130720 A130721 this_sequence A130723 A130724 A130725`
	KEYWORD	`nonn,easy`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Aug 16 2007`
	EXTENSIONS	`Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 07 2008`

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.

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