OFFSET
0,2
COMMENTS
If n >=11, then 16 divides a(n).
LINKS
Clark Kimberling, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (-2,-2).
FORMULA
G.f.: 1/(1 + 2x + 4x^2 + 5x^3 + 6x^4 + 8x^5 + ...).
G.f.: (1 - x) (1 - x^3)/(1 + 2 x + 2 x^2).
MATHEMATICA
z = 50; f[x_] := f[x] = Sum[Floor[(5/3)*(k + 1)] x^k, {k, 0, z}]; f[x]
CoefficientList[Series[1/f[x], {x, 0, z}], x]
CROSSREFS
KEYWORD
sign,easy
AUTHOR
Clark Kimberling, Dec 18 2016
STATUS
approved