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A027085 a(n) = A027082(n, n+3). 0
5, 16, 39, 84, 169, 328, 623, 1168, 2173, 4024, 7431, 13700, 25233, 46448, 85471, 157248, 289269, 532096, 978727, 1800212, 3311161, 6090232, 11201743, 20603280, 37895405, 69700584, 128199431, 235795588, 433695777, 797690976 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
G.f.: (x^3-x^2-x-5)/((x-1)^2(x^3+x^2+x-1)). - Harvey P. Dale, May 15 2013
a(n) = A027025(n) + n + 1.
a(n) = A000213(n+6) -3*(n+4). - R. J. Mathar, Jun 24 2020
MATHEMATICA
CoefficientList[Series[-((-x^3+x^2+x+5)/((x-1)^2 (x^3+x^2+x-1))), {x, 0, 30}], x] (* Harvey P. Dale, May 15 2013 *)
CROSSREFS
Sequence in context: A216173 A269747 A011863 * A099452 A006007 A001753
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified March 28 16:34 EDT 2024. Contains 371254 sequences. (Running on oeis4.)