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 A051067 #16 Jul 02 2025 16:01:58
%S A051067 0,1,1,1,0,0,0,1,1,0,0,1,0,0,1,0,0,1,1,0,0,0,1,1,1,0,0,0,1,1,1,0,0,0,
%T A051067 1,1,0,0,1,0,0,1,0,0,1,1,0,0,0,1,1,1,0,0,0,1,1,1,0,0,0,1,1,0,0,1,0,0,
%U A051067 1,0,0,1,1,0,0,0,1,1,1,0,0,1,1,0,1,1,0,1,1,0,0,1,1,1,0,0,0,1,1,0,0,1,0,0,1
%N A051067 A051066 read mod 2.
%D A051067 Letter from _Gary W. Adamson_ concerning Prouhet-Thue-Morse sequence, Nov. 11, 1999.
%t A051067 Mod[Accumulate[Join[{0}, Mod[Accumulate[Table[IntegerExponent[3*n, 3], {n, 1, 100}]], 2]]], 2] (* _Amiram Eldar_, Jun 02 2025 *)
%Y A051067 Cf. A004128, A051065, A051066.
%K A051067 nonn,easy
%O A051067 0,1
%A A051067 _N. J. A. Sloane_ and _Gary W. Adamson_
%E A051067 More terms from _James Sellers_, Dec 11 1999