A140205 Partial sums of A140085.

0, 1, 2, 4, 5, 7, 9, 12, 12, 13, 14, 16, 17, 19, 21, 24, 24, 25, 26, 28, 29, 31, 33, 36, 36, 37, 38, 40, 41, 43, 45, 48, 48, 49, 50, 52, 53, 55, 57, 60, 60, 61, 62, 64, 65, 67, 69, 72, 72, 73, 74, 76, 77, 79, 81, 84, 84, 85, 86, 88, 89, 91, 93, 96, 96, 97, 98, 100, 101, 103, 105, 108

Offset

0,3

Links

Table of n, a(n) for n=0..71.

Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,0,0,1,-1).

Formula

G.f.: x*(3*x^6+2*x^5+2*x^4+x^3+2*x^2+x+1) / ((x-1)^2*(x+1)*(x^2+1)*(x^4+1)). - Colin Barker, Jul 26 2013

Mathematica

LinearRecurrence[{1, 0, 0, 0, 0, 0, 0, 1, -1}, {0, 1, 2, 4, 5, 7, 9, 12, 12}, 80] (* Harvey P. Dale, Jan 28 2015 *)

Crossrefs

Sequence in context: A338758 A051060 A116650 * A140206 A007818 A158618

Adjacent sequences: A140202 A140203 A140204 * A140206 A140207 A140208

Keyword

nonn,easy

Author

Nadia Heninger and N. J. A. Sloane, Jun 09 2008

Status

approved