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 A324715 #6 Mar 15 2019 21:55:41
%S A324715 0,3,7,1,15,8,31,4,7,19,63,23,127,44,14,0,255,31,511,44,27,78,1023,40,
%T A324715 11,170,4,71,2047,20,4095,24,74,334,18,28,8191,764,108,64,16383,72,
%U A324715 32767,177,9,1246,65535,88,19,57,256,341,131071,52,35,180,492,2792,262143,74,524287,5454,116,8,134,221,1048575,645,1274,70,2097151,20
%N A324715 Xor-Moebius transform of A324713.
%H A324715 Antti Karttunen, <a href="/A324715/b324715.txt">Table of n, a(n) for n = 1..10000</a> (based on Hans Havermann's factorization of A156552)
%F A324715 a(n) = A324712(n) XOR 2*A297106(n).
%o A324715 (PARI) A324715(n) = { my(v=0); fordiv(n, d, if(issquarefree(n/d), v=bitxor(v, A324713(d)))); (v); };
%Y A324715 Cf. A003987, A297106, A324712, A324713, A324714, A324717.
%K A324715 nonn
%O A324715 1,2
%A A324715 _Antti Karttunen_, Mar 15 2019