9037643776

Appears in sequences

• a(n) = 4*a(n-1) + 4*a(n-2), a(0)=1, a(1)=2.at n=15A084128
• p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - 6 S + S^2.at n=11A291018