OFFSET
1,1
FORMULA
From Chai Wah Wu, May 30 2016: (Start)
a(n) = a(n-1) + a(n-5) - a(n-6) for n > 6.
G.f.: x*(x^5 + x^4 + 2*x^3 + x^2 + x + 2)/(x^6 - x^5 - x + 1). (End)
CROSSREFS
KEYWORD
nonn,changed
AUTHOR
STATUS
proposed