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 A134267 #15 Dec 12 2023 08:52:25
%S A134267 3,2,3,2,5,2,3,2,5,2,3,2,5,2,3,2,5,2,3,2,5,2,3,2,5,2,3,2,5,2,3,2,5,2,
%T A134267 3,2,5,2,3,2,5
%N A134267 a(n) = |A090964(n+1) - A090964(n)|.
%C A134267 Except for initial term, periodic sequence with period 2 3 2 5.
%H A134267 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,1).
%t A134267 LinearRecurrence[{0,0,0,1},{3,2,3,2,5},50] (* or *) PadRight[{3},50,{5,2,3,2}] (* _Harvey P. Dale_, May 13 2023 *)
%Y A134267 Cf. A090964.
%K A134267 nonn
%O A134267 1,1
%A A134267 _Giovanni Teofilatto_, Jan 15 2008