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 A276860 #7 Sep 26 2016 21:35:23
%S A276860 5,5,6,5,6,5,6,5,5,6,5,6,5,6,5,5,6,5,6,5,6,5,6,5,5,6,5,6,5,6,5,5,6,5,
%T A276860 6,5,6,5,6,5,5,6,5,6,5,6,5,5,6,5,6,5,6,5,6,5,5,6,5,6,5,6,5,5,6,5,6,5,
%U A276860 6,5,5,6,5,6,5,6,5,6,5,5,6,5,6,5,6,5
%N A276860 First differences of the Beatty sequence A276853 for 2*e.
%H A276860 Clark Kimberling, <a href="/A276860/b276860.txt">Table of n, a(n) for n = 1..10000</a>
%F A276860 a(n) = floor(n*r) - floor(n*r - r), where r = 2e, n >= 1.
%t A276860 z = 500; r = 2*E; b = Table[Floor[k*r], {k, 0, z}]; (* A276853 *)
%t A276860 Differences[b] (* A276860 *)
%Y A276860 Cf. A022843, A276876.
%K A276860 nonn,easy
%O A276860 1,1
%A A276860 _Clark Kimberling_, Sep 24 2016