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 A125894 #8 Sep 08 2022 08:45:29
%S A125894 1,1,1,2,2,3,3,4,5,6,7,9,11,13,16,20,24,29,35,43,52,62,75,91,110,133,
%T A125894 161,194,234,283,342,412,498,601,726,876,1058,1277,1541,1861,2246,
%U A125894 2712,3273,3951,4770,5758,6951,8390,10128,12226,14758,17814,21504,25957
%N A125894 a(n) = floor(((1+sqrt(2))/2)^n).
%H A125894 G. C. Greubel, <a href="/A125894/b125894.txt">Table of n, a(n) for n = 1..10000</a>
%t A125894 Table[Floor[((1 + Sqrt[2])/2)^n], {n, 1, 100}]
%o A125894 (PARI) vector(100, n, floor(((1+sqrt(2))/2)^n)) \\ _G. C. Greubel_, Oct 02 2018
%o A125894 (Magma) [Floor(((1+Sqrt(2))/2)^n): n in [1..100]]; // _G. C. Greubel_, Oct 02 2018
%Y A125894 Cf. A125890-A125899.
%Y A125894 Cf. A174968 ((1+sqrt(2))/2).
%K A125894 nonn
%O A125894 1,4
%A A125894 _Artur Jasinski_, Dec 13 2006