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 A063672 #11 Feb 26 2024 15:32:17 %S A063672 10,1,11,111,101,11111,11,1111111,10001,1001001,1011,11111111111,1101, %T A063672 1111111111111,101011,10010111,100000001,11111111111111111,111001, %U A063672 1111111111111111111,11001101,100100110111,1010101011 %N A063672 Sequence A019320 in binary. %H A063672 Paolo Xausa, <a href="/A063672/b063672.txt">Table of n, a(n) for n = 0..900</a> %p A063672 map(convert, A019320,binary); or up to n=104 with: map(convert,[seq(Phi_pos_terms(j,2)-Phi_neg_terms(j,2),j=0..104)],binary); %t A063672 A063672[n_] := If[n == 0, 10, FromDigits[IntegerDigits[Cyclotomic[n, 2], 2]]]; %t A063672 Array[A063672, 30, 0] (* _Paolo Xausa_, Feb 26 2024 *) %Y A063672 Cf. A063697, A063699, A063671. %K A063672 nonn,base %O A063672 0,1 %A A063672 _Antti Karttunen_, Aug 03 2001