80285696

Appears in sequences

• a(n) = 4*a(n-1) + 4*a(n-2), a(0)=1, a(1)=2.at n=12A084128
• Expansion of (1 + 6*x - 12*x^2 - 8*x^3)/(1 - 24*x^2 + 16*x^4).at n=12A164584