This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A014728 #16 Jul 02 2025 16:01:55 %S A014728 1,1,9,25,169,441,3025,7921,54289,142129,974169,2550409,17480761, %T A014728 45765225,313679521,821223649,5628750625,14736260449,101003831721, %U A014728 264431464441,1812440220361,4745030099481,32522920134769 %N A014728 Squares of odd Fibonacci numbers. %F A014728 G.f.: (-x^5-x^4+8x^3-8x^2+x+1)/[(1+x^2)(1+4x-x^2)(1-4x-x^2)]. %F A014728 a(n) = A014437(n)^2. - _Sean A. Irvine_, Nov 18 2018 %t A014728 Select[Fibonacci[Range[40]],OddQ]^2 (* _Harvey P. Dale_, Jan 18 2012 *) %o A014728 (PARI) A014728(n)=A014437(n)^2 \\ _M. F. Hasler_, Nov 18 2018 %Y A014728 Cf. A014437. %K A014728 nonn %O A014728 0,3 %A A014728 _Mohammad K. Azarian_ %E A014728 More terms from _James Sellers_