a(n) = 5*a(n-1) + 6*a(n-2), a(0) = 0, a(1) = 1.

Terms

a(0) =0a(1) =1a(2) =5a(3) =31a(4) =185a(5) =1111a(6) =6665a(7) =39991a(8) =239945a(9) =1439671a(10) =8638025a(11) =51828151a(12) =310968905a(13) =1865813431a(14) =11194880585a(15) =67169283511a(16) =403015701065