A324715 - OEIS

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

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OFFSET

1,2

LINKS

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

FORMULA

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

PROG

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

CROSSREFS

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

Sequence in context: A196231 A210037 A210197 * A316665 A110238 A077505

Adjacent sequences: A324712 A324713 A324714 * A324716 A324717 A324718

KEYWORD

nonn

AUTHOR

Antti Karttunen, Mar 15 2019

STATUS

approved