A107332 - OEIS

A107332

Expansion of x^2*(-1+x+x^2)/(-1+x+x^2-x^3+x^5).

0, 1, 0, 0, -1, -1, -1, -1, -1, -2, -3, -5, -7, -10, -14, -20, -29, -42, -61, -88, -127, -183, -264, -381, -550, -794, -1146, -1654, -2387, -3445, -4972, -7176, -10357, -14948, -21574, -31137, -44939, -64859, -93609, -135103, -194990, -281423, -406169, -586211, -846060, -1221092, -1762364

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OFFSET

1,10

LINKS

Table of n, a(n) for n=1..47.

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

FORMULA

a(n) = a(n-1) + a(n-2) - a(n-3) + a(n-5) for n>=5.

O.g.f.: x^2*(-1+x+x^2)/(-1+x+x^2-x^3+x^5). - R. J. Mathar, Dec 02 2007

a(n) = A107293(n+2)-A107293(n+1)-A107293(n). - R. J. Mathar, Dec 17 2017

MAPLE

a[0]:=0:a[1]:=1:a[2]:=0:a[3]:=0:a[4]:=-1: