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 A251708 #14 Feb 27 2023 08:39:53
%S A251708 0,0,1,0,0,0,1,2,4,7,14,28,56,111,220,436,865,1716,3404,6752,13393,
%T A251708 26566,52696,104527,207338,411272,815792,1618191,3209816,6366936,
%U A251708 12629345,25051352,49691432,98567072,195515953,387822090,769277244,1525925143,3026798934
%N A251708 6-step Fibonacci sequence starting with (0,0,1,0,0,0).
%H A251708 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (1,1,1,1,1,1).
%F A251708 a(n+6) = a(n) + a(n+1) + a(n+2) + a(n+3) + a(n+4) + a(n+5).
%F A251708 G.f.: x^2*(-1+x+x^2+x^3)/(-1+x+x^2+x^3+x^4+x^5+x^6) . - _R. J. Mathar_, Feb 27 2023
%t A251708 LinearRecurrence[Table[1, {6}], {0, 0, 1, 0, 0, 0}, 40] (* _Michael De Vlieger_, Dec 09 2014 *)
%Y A251708 Other 6-step Fibonacci sequences are A001592, A074584, A251706, A251707, A251709.
%K A251708 nonn,easy
%O A251708 0,8
%A A251708 _Arie Bos_, Dec 07 2014