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 A169673 #20 Jul 28 2025 20:17:00 %S A169673 0,0,0,0,0,0,0,1,0,0,0,0,0,1,1,0,0,0,0,1,0,1,0,0,0,0,1,1,1,0,0,0,1,0, %T A169673 0,1,0,0,0,1,0,1,1,0,0,0,1,1,0,1,0,0,0,1,1,1,1,0,0,1,0,0,1,1,0,0,1,0, %U A169673 1,0,1,0,0,1,0,1,1,1,0,0,1,1,0,1,1,0,0,1,1,1,0,1,0,0,1,1,1,1,1 %N A169673 Lexicographically earliest de Bruijn sequence for n = 7 and k = 2. %H A169673 Ray Chandler, <a href="/A169673/b169673.txt">Table of n, a(n) for n = 0..1023</a> %H A169673 Frank Ruskey, <a href="http://combos.org/bruijn">Generate de Bruijn sequences</a> %H A169673 <a href="/index/Rec#order_128">Index entries for linear recurrences with constant coefficients</a>, order 128. %e A169673 Periodic with period 128, the period being: %e A169673 00000001000001100001010000111000100100010110001101000111100100110\ %e A169673 010101001011100110110011101001111101010110101111011011101111111 %Y A169673 Cf. A021913, A169675, A080679, A169672, A169671, A169674. %K A169673 nonn,easy %O A169673 0,1 %A A169673 _N. J. A. Sloane_, Apr 11 2010