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 A175269 #7 Sep 08 2022 08:45:51
%S A175269 1,1,0,-1,-3,-5,-7,-9,-11,-14,-17,-20,-22,-25,-28,-32,-34,-37,-41,-44,
%T A175269 -47,-51,-54,-57,-60,-62,-66,-69,-72,-75,-78,-81,-84,-87,-90,-92,-94,
%U A175269 -98,-100,-102,-104,-106,-108,-110,-111,-113,-114,-116,-117,-117,-118
%N A175269 a(n) = floor(2^sqrt(n)) - floor(n^sqrt(2)).
%H A175269 G. C. Greubel, <a href="/A175269/b175269.txt">Table of n, a(n) for n = 0..10000</a>
%t A175269 Table[Floor[2^Sqrt[n]] - Floor[n^Sqrt[2]], {n, 0, 100}]
%o A175269 (PARI) vector(100, n, n--; floor(2^sqrt(n)) - floor(n^sqrt(2))) \\ _G. C. Greubel_, Oct 02 2018
%o A175269 (Magma) [Floor(2^Sqrt(n)) - Floor(n^Sqrt(2)): n in [0..100]]; // _G. C. Greubel_, Oct 02 2018
%Y A175269 Cf. A134886, A175268.
%K A175269 sign
%O A175269 0,5
%A A175269 _Zak Seidov_, Mar 18 2010