A131725 Partial sums of A131711.

0, 1, 3, 8, 10, 19, 19, 28, 36, 41, 49, 50, 50, 51, 53, 58, 60, 69, 69, 78, 86, 91, 99, 100, 100, 101, 103, 108, 110, 119, 119, 128, 136, 141, 149, 150, 150, 151, 153, 158, 160, 169, 169, 178, 186, 191, 199, 200

Offset

0,3

Links

Table of n, a(n) for n=0..47.

Index entries for linear recurrences with constant coefficients, signature (1,1,-1,-1,1,1,-1,-1,1,1,-1).

Formula

O.g.f.: x*(x^8+8x^7+4x^6+5x^4+4x^2+2x+1)/((x-1)^2*(1+x)*(x^2+x+1)*(x^2-x+1)*(x^4-x^2+1)). - R. J. Mathar, Jul 04 2008

a(n) = a(n-1) + a(n-2) - a(n-3) - a(n-4) + a(n-5) + a(n-6) - a(n-7) - a(n-8) + a(n-9) + a(n-10) - a(n-11) for n > 10. - Chai Wah Wu, Jan 09 2021

Crossrefs

Cf. A131711.

Sequence in context: A079541 A283757 A353078 * A346370 A332976 A032914

Adjacent sequences: A131722 A131723 A131724 * A131726 A131727 A131728

Keyword

nonn,easy

Author

Paul Curtz, Sep 16 2007

Extensions

Edited by R. J. Mathar, Jul 04 2008

Status

approved