A324180 - OEIS

A324180

SumXOR variant of A297168.

0, 0, 0, 1, 0, 3, 0, 3, 2, 5, 0, 3, 0, 9, 6, 7, 0, 5, 0, 3, 10, 17, 0, 3, 4, 33, 6, 3, 0, 5, 0, 15, 18, 65, 12, 7, 0, 129, 34, 15, 0, 9, 0, 3, 6, 257, 0, 3, 8, 9, 66, 3, 0, 9, 20, 23, 130, 513, 0, 15, 0, 1025, 6, 31, 36, 17, 0, 3, 258, 9, 0, 3, 0, 2049, 10, 3, 24, 33, 0, 23, 14, 4097, 0, 23, 68, 8193, 514, 39, 0, 9, 40, 3

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OFFSET

1,6

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..4096

Index entries for sequences related to binary expansion of n

Index entries for sequences computed from indices in prime factorization

FORMULA

a(n) = Cumulative XOR of A297112(d), where d ranges over the proper divisors d of n.

PROG

(PARI)

A061395(n) = if(1==n, 0, primepi(vecmax(factor(n)[, 1])));