131466

Appears in sequences

• a(0)=-5, a(1)=6; thereafter a(n) = 2*a(n-1) + a(n-2).at n=13A221175
• Expansion of g^2/(1 + x^2*g), where g = 1+x*g^4 is the g.f. of A002293.at n=7A389566