OFFSET
0,3
FORMULA
From Chai Wah Wu, Nov 01 2018: (Start)
a(n) = a(n-1) - a(n-14) + a(n-15) for n > 18.
G.f.: x^2*(-5*x^16 - 2*x^15 - x^14 + 2*x^13 + 6*x^12 - 2*x^11 - 4*x^10 - 2*x^9 + 3*x^8 - 2*x^7 + 5*x^6 - 6*x^5 + 4*x^4 - 4*x^2 + x - 2)/(x^15 - x^14 + x - 1). (End)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
STATUS
approved