OFFSET
1,2
LINKS
Stanislav Sykora, Table of n, a(n) for n = 1..666
Eric Weisstein's World of Mathematics, Evil Number
FORMULA
Empirical g.f.: x * (1 +9*x +81*x^2) * (1 +729*x^3 +531441*x^6) / ((1 -9*x) * (1 +8*x +63*x^2 +486*x^3 +3645*x^4 +26244*x^5 +177147*x^6 +1062882*x^7 +4782969*x^8)). - Colin Barker, Apr 17 2016
EXAMPLE
1/9, 10/81, 100/729, 1000/6561, 10000/59049, ...
MATHEMATICA
Table[Numerator@ SeriesCoefficient[(1 - x^9)/(x^10 - 10 x + 9), {x, 0, n}], {n, 0, 21}]
PROG
(PARI) s = Vec(Ser((1-x^9)/(x^10-10*x+9), x, 666));
a = vector(#s, n, numerator(s[n])) \\ Stanislav Sykora, Apr 16 2016
CROSSREFS
KEYWORD
nonn,base,frac,easy
AUTHOR
Eric W. Weisstein, Nov 01 2004
EXTENSIONS
More terms from Michael De Vlieger, Apr 16 2016
STATUS
approved