OFFSET
0,1
LINKS
Index entries for linear recurrences with constant coefficients, signature (1,2,-3,-1,4,-1,-2,1).
FORMULA
a(n)= +a(n-1) +2*a(n-2) -3*a(n-3) -a(n-4) +4*a(n-5) -a(n-6) -2*a(n-7) +a(n-8).
MATHEMATICA
f[x_] = Expand[(1 - x^2 + x^3 + x^4 - x^5)*(-x^2 + x^3 + x^4 - x^5)];
a = Table[SeriesCoefficient[Series[-1/f[x], {x, 0, 50}], n], {n, 0, 50}]
LinearRecurrence[{1, 2, -3, -1, 4, -1, -2, 1}, {3, 2, 4, 2, 4, 3, 5, 6}, 60] (* Harvey P. Dale, Apr 09 2023 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
Roger L. Bagula, Dec 04 2010
STATUS
approved