a(n) = 12*a(n-1) - 31*a(n-2) for n > 1; a(0) = 1, a(1) = 7.

A163306

a(n) = 12*a(n-1) - 31*a(n-2) for n > 1; a(0) = 1, a(1) = 7.

Terms

    a(0) =1a(1) =7a(2) =53a(3) =419a(4) =3385a(5) =27631a(6) =226637a(7) =1863083a(8) =15331249a(9) =126219415a(10) =1039364261a(11) =8559569267a(12) =70494539113a(13) =580587822079

External references