OFFSET
0,5
FORMULA
sum(n = 0, infinity)a(n)x^n = 1/f(x).
EXAMPLE
1/f(x) = x - x^2 - x^3 + 4*x^4 - x^5 - 11*x^6 + 11*x^7 + 26*x^8 - 46*x^9 - 70*x^10 + 202*x^11 + 160*x^12 - 936*x^13 + 252*x^14 + 3119*x^15 + O(x^16)
PROG
(PARI) N=40; f=x; g=1; for(n=1, N, g/=f; f+=g+O(x^N)); Vec(1/f)
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Nikolaus Meyberg (Nikolaus.Meyberg(AT)t-online.de), Jun 20 2005
STATUS
approved