A131091 - OEIS

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A131091

Partial sums of A131707.

1, 2, 5, 12, 19, 20, 29, 38, 45, 48, 51, 60, 61, 62, 65, 72, 79, 80, 89, 98, 105, 108, 111, 120, 121, 122, 125, 132, 139, 140, 149, 158, 165, 168, 171, 180, 181, 182, 185, 192, 199, 200, 209, 218, 225, 228, 231, 240, 241, 242, 245, 252, 259, 260, 269, 278, 285 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n)=sum_{i=0..n} A131707(i). A131707(n)= A001333(n) mod 10.` `O.g.f.: (9x^6-6x^5+4x^3+2x^2+1)/((x-1)^2*(x^2+1)(x^4-x^2+1)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 16 2008`
	CROSSREFS	`Cf. A131725.` `Sequence in context: A002355 A085395 A041641 * A116728 A095306 A079648` `Adjacent sequences: A131088 A131089 A131090 * A131092 A131093 A131094`
	KEYWORD	`nonn,easy`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Sep 24 2007`
	EXTENSIONS	`Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 16 2008`

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.