a(1) = a(2) = 1, a(n) = -11*a(n-1) + a(n-2).

A122574

a(1) = a(2) = 1, a(n) = -11*a(n-1) + a(n-2).

Terms

    a(0) =1a(1) =1a(2) =-10a(3) =111a(4) =-1231a(5) =13652a(6) =-151403a(7) =1679085a(8) =-18621338a(9) =206513803a(10) =-2290273171a(11) =25399518684a(12) =-281684978695

External references