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 A276869 #14 Apr 10 2021 16:38:56
%S A276869 2,3,3,2,3,3,2,3,3,3,2,3,3,2,3,3,3,2,3,3,2,3,3,2,3,3,3,2,3,3,2,3,3,3,
%T A276869 2,3,3,2,3,3,2,3,3,3,2,3,3,2,3,3,3,2,3,3,2,3,3,3,2,3,3,2,3,3,2,3,3,3,
%U A276869 2,3,3,2,3,3,3,2,3,3,2,3,3,2,3,3,3,2
%N A276869 First differences of the Beatty sequence A182769 for 2 + sqrt(1/2).
%H A276869 Clark Kimberling, <a href="/A276869/b276869.txt">Table of n, a(n) for n = 1..10000</a>
%F A276869 a(n) = floor(n*r) - floor(n*r - r), where r = 2 + sqrt(1/2), n >= 1.
%t A276869 z = 500; r = 2+Sqrt[1/2]; b = Table[Floor[k*r], {k, 0, z}]; (* A182769 *)
%t A276869 Differences[b] (* A276869 *)
%Y A276869 Cf. A182769, A276888.
%K A276869 nonn,easy
%O A276869 1,1
%A A276869 _Clark Kimberling_, Sep 24 2016