-2603047

Appears in sequences

• a(0)=1, a(1)=1; thereafter a(n) = -a(n-1) - 2*a(n-2).at n=45A169998
• a(n) = 3*a(n-1) - 4*a(n-2) with a(0) = a(1) = 1.at n=23A247560