a(n) = 5*a(n-1) + 14*a(n-2), a(0)=1, a(1)=5.

Terms

a(0) =1a(1) =5a(2) =39a(3) =265a(4) =1871a(5) =13065a(6) =91519a(7) =640505a(8) =4483791a(9) =31386025a(10) =219703199a(11) =1537920345a(12) =10765446511a(13) =75358117385a(14) =527506838079