a(n) = 7*a(n-1) + a(n-2), starting with a(0) = 2 and a(1) = 7.

A086902

a(n) = 7*a(n-1) + a(n-2), starting with a(0) = 2 and a(1) = 7.

Terms

    a(0) =2a(1) =7a(2) =51a(3) =364a(4) =2599a(5) =18557a(6) =132498a(7) =946043a(8) =6754799a(9) =48229636a(10) =344362251a(11) =2458765393a(12) =17555720002a(13) =125348805407a(14) =894997357851

External references