A225500 Expansion of 1/(1 - x - x^5 + x^6 - x^7 - x^11 + x^12).

1, 1, 1, 1, 1, 2, 2, 3, 4, 5, 7, 9, 12, 15, 19, 25, 33, 43, 56, 73, 95, 124, 161, 210, 273, 355, 463, 603, 786, 1023, 1332, 1735, 2259, 2942, 3831, 4989, 6497, 8461, 11019, 14350, 18687, 24335, 31691, 41270, 53745

Offset

0,6

Links

G. C. Greubel, Table of n, a(n) for n = 0..1000

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

Mathematica

CoefficientList[Series[1/(1 - x - x^5 + x^6 - x^7 - x^11 + x^12), {x, 0, 50}], x]
LinearRecurrence[{1, 0, 0, 0, 1, -1, 1, 0, 0, 0, 1, -1}, {1, 1, 1, 1, 1, 2, 2, 3, 4, 5, 7, 9}, 100] (* G. C. Greubel, Nov 16 2016 *)

Prog

(PARI) Vec(1/(1-x -x^5 +x^6 -x^7 -x^11 +x^12) + O(x^50)) \\ G. C. Greubel, Nov 16 2016

Crossrefs

Cf. A117791, A107293, A204631, A225391, A225482, A225484, A225490, A225490.

Sequence in context: A052336 A318053 A061287 * A064651 A094991 A255575

Adjacent sequences: A225497 A225498 A225499 * A225501 A225502 A225503

Keyword

nonn,easy

Author

Roger L. Bagula, May 09 2013

Status

approved