OFFSET
1,1
REFERENCES
Posting to sci.math.research by dima(AT)win.tue.nl (Dmitrii V. Pasechnik), Oct 28 1996.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
D. Pasechnik, Poincare series for the depths of roots in a root system, Sci. Math. Research posting Oct 28 1996.
Index entries for linear recurrences with constant coefficients, signature (0,1,2,2,0,-1,-2,-1,-1).
FORMULA
a(n+1) = sum_{i=n-11}^n v(i)*a(i), where v = [ 0,0,-1,-1,-2,-1,0,2,2,1,0 ].
G.f.: x*(x^10+3*x^9+x^8-x^7-9*x^6-14*x^5-15*x^4-7*x^3+x^2+5*x+5) / (x^9+x^8+2*x^7+x^6-2*x^4-2*x^3-x^2+1). [Colin Barker, Nov 28 2012]
MATHEMATICA
CoefficientList[Series[(x^10 + 3 x^9 + x^8 - x^7 - 9 x^6 - 14 x^5 - 15 x^4 - 7 x^3 + x^2 + 5 x + 5)/ (x^9 + x^8 + 2 x^7 + x^6 - 2 x^4 - 2 x^3 - x^2 + 1), {x, 0, 50}], x] (* Vincenzo Librandi, Oct 16 2013 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved