A324715 Xor-Moebius transform of A324713.

0, 3, 7, 1, 15, 8, 31, 4, 7, 19, 63, 23, 127, 44, 14, 0, 255, 31, 511, 44, 27, 78, 1023, 40, 11, 170, 4, 71, 2047, 20, 4095, 24, 74, 334, 18, 28, 8191, 764, 108, 64, 16383, 72, 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

Offset: 1

Author

Antti Karttunen, Mar 15 2019

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..10000 (based on Hans Havermann's factorization of A156552)

Crossrefs

Cf. A003987, A297106, A324712, A324713, A324714, A324717.

Programs

PARI

A324715(n) = { my(v=0); fordiv(n, d, if(issquarefree(n/d), v=bitxor(v, A324713(d)))); (v); };

Formula

a(n) = A324712(n) XOR 2*A297106(n).