OFFSET
0,3
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..700
FORMULA
a(n) = A001006(n)^3.
MAPLE
a1006:= gfun:-rectoproc({(-3*x-6)*a(x+1)+(-2*x-7)*a(x+2)+(x+5)*a(x+3), a(0) = 1, a(1) = 1, a(2) = 2}, a(x), remember):
map(a1006^3, [$0..60]); # Robert Israel, Oct 03 2017
MATHEMATICA
CoefficientList[Series[(1 - x - (1 - 2 x - 3 x^2)^(1/2))/(2 x^2), {x, 0, 50}], x]^3 (* G. C. Greubel, Oct 03 2017 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Oct 30 2007
STATUS
approved