222745

Appears in sequences

• Expansion of 1/sqrt((1-x)^2-8x^4).at n=18A098483
• Expansion of (5+4x)/(1-2x-x^2).at n=12A105082
• a(0)=-3, a(1)=4; thereafter a(n) = 2*a(n-1) + a(n-2).at n=14A221173