A323172 Denominator of the average of distinct prime factors of n (A008472(n)/A001221(n)).

1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 1, 2, 1, 1, 1, 3, 1, 2, 1, 3, 1, 2, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 3, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 1, 2, 1, 2

Offset

2,5

Links

Antti Karttunen, Table of n, a(n) for n = 2..65539

Prog

(PARI)
A008472(n) = vecsum(factor(n)[, 1]); \\ From A008472
A323172(n) = (denominator(A008472(n)/omega(n)));

Crossrefs

Cf. A323171 (numerators).

Cf. A001221, A008472, A123529, A322591.

Sequence in context: A300409 A361631 A247462 * A327403 A247371 A331177

Adjacent sequences: A323169 A323170 A323171 * A323173 A323174 A323175

Keyword

nonn,frac

Author

Antti Karttunen, Jan 05 2019

Status

approved