-1888

Appears in sequences

• Expansion of 1/(1+x+2*x^2+x^3).at n=27A077979
• Expansion of (1-x)/(1-x+x^3).at n=57A078013
• Expansion of g.f. -x/(1+x-x^3).at n=55A104769
• G.f. satisfies A(A(A(A(x)))) = F(x), where F(x) is the g.f. for A002697(n) = n*4^(n-1).at n=9A372492