A373366 - OEIS

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A373366

a(n) = gcd(A064097(n), A083345(n)).

0, 1, 1, 1, 1, 1, 1, 3, 2, 1, 1, 4, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 2, 3, 1, 2, 1, 1, 1, 5, 7, 1, 1, 1, 1, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 7, 1, 1, 8, 1, 2, 1, 1, 1, 1, 1, 1, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 9, 1, 1, 1, 4, 1, 1, 1, 2, 9, 1, 1, 1, 1, 1, 3, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,8

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..100000

PROG

(PARI)

A064097(n) = if(1==n, 0, 1+A064097(n-(n/vecmin(factor(n)[, 1]))));

A083345(n) = { my(f=factor(n)); numerator(vecsum(vector(#f~, i, f[i, 2]/f[i, 1]))); };

A373366(n) = gcd(A064097(n), A083345(n));

CROSSREFS

Cf. A064097, A083345.