a(n) = 5*F(n)^2 - 5*F(n) + 1, where F(n) = Fibonacci(n).

Terms

a(0) =1a(1) =1a(2) =1a(3) =11a(4) =31a(5) =101a(6) =281a(7) =781a(8) =2101a(9) =5611a(10) =14851a(11) =39161a(12) =102961a(13) =270281a(14) =708761a(15) =1857451a(16) =4865911a(17) =12744061a(18) =33372361a(19) =87382901a(20) =228792301a(21) =599019851a(22) =1568309051a(23) =4105974961a(24) =10749725281a(25) =28143378001a(26) =73680695281a(27) =192899171531