a(n) = (F(n+1) + L(n))^2 where F(n) are the Fibonacci numbers (A000045) and L(n) are the Lucas numbers (A000032).

A014717

a(n) = (F(n+1) + L(n))^2 where F(n) are the Fibonacci numbers (A000045) and L(n) are the Lucas numbers (A000032).

Terms

    a(0) =9a(1) =4a(2) =25a(3) =49a(4) =144a(5) =361a(6) =961a(7) =2500a(8) =6561a(9) =17161a(10) =44944a(11) =117649a(12) =308025a(13) =806404a(14) =2111209a(15) =5527201a(16) =14470416a(17) =37884025a(18) =99181681a(19) =259660996a(20) =679801329a(21) =1779742969a(22) =4659427600a(23) =12198539809a(24) =31936191849a(25) =83610035716a(26) =218893915321a(27) =573071710225

External references