a(n) = 14*a(n-1) - a(n-2); a(0) = a(1) = 2.

A094347

a(n) = 14*a(n-1) - a(n-2); a(0) = a(1) = 2.

Terms

    a(0) =2a(1) =2a(2) =26a(3) =362a(4) =5042a(5) =70226a(6) =978122a(7) =13623482a(8) =189750626a(9) =2642885282a(10) =36810643322a(11) =512706121226

External references