OFFSET
0,7
COMMENTS
a(n+5) is the Hankel transform of A052702(n+3).
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (1,-1,-1,1,-1).
FORMULA
G.f.: x^3*(1-x^2)/(1 + x^3)^2.
MATHEMATICA
LinearRecurrence[{1, -1, -1, 1, -1}, {0, 0, 0, 1, 0}, 100] (* G. C. Greubel, May 02 2018 *)
PROG
(PARI) x='x+O('x^50); concat([0, 0, 0], Vec(x^3*(1-x^2)/(1 + x^3)^2)) \\ G. C. Greubel, May 02 2018
(Magma) m:=50; R<x>:=PowerSeriesRing(Integers(), m); [0, 0, 0] cat Coefficients(R!(x^3*(1-x^2)/(1 + x^3)^2)); // G. C. Greubel, May 02 2018
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Paul Barry, May 24 2009
STATUS
approved