A025772 Expansion of 1/((1-x)(1-x^4)(1-x^5)).

1, 1, 1, 1, 2, 3, 3, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 21, 23, 24, 25, 27, 29, 31, 32, 34, 36, 38, 40, 42, 44, 46, 48, 51, 53, 55, 57, 60, 63, 65, 67, 70, 73, 76, 78, 81, 84, 87, 90, 93, 96, 99

Offset

0,5

Links

Harvey P. Dale, Table of n, a(n) for n = 0..1000

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

Mathematica

CoefficientList[Series[1/((1-x)(1-x^4)(1-x^5)), {x, 0, 80}], x] (* or *) LinearRecurrence[{1, 0, 0, 1, 0, -1, 0, 0, -1, 1}, {1, 1, 1, 1, 2, 3, 3, 3, 4, 5}, 80] (* Harvey P. Dale, Nov 14 2021 *)

Crossrefs

Sequence in context: A064474 A072688 A120504 * A211535 A029069 A266341

Adjacent sequences: A025769 A025770 A025771 * A025773 A025774 A025775

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved