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A353755

a(n) = A062401(n) / gcd(A062401(n), A353752(n)), where A062401(n) = phi(sigma(n)), and A353752(n) = Product_{p^e||n} phi(sigma(p^e)).

1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 2, 3, 2, 1, 1, 1, 2, 3, 1, 2, 1, 1, 1, 3, 1, 1, 1, 1, 2, 7, 1, 1, 3, 1, 2, 3, 1, 2, 1, 1, 1, 1, 2, 3, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 3, 1, 2, 3, 1, 2, 3, 1, 3, 2, 1, 2, 3, 2, 1, 1, 3, 1, 1, 1, 3, 1, 1, 4

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OFFSET

1,10

COMMENTS

Numerator of fraction A062401(n) / A353752(n).

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..65537

Index entries for sequences related to sigma(n)

FORMULA

a(n) = A062401(n) / A353754(n) = A062401(n) / gcd(A062401(n), A353752(n)).

PROG

(PARI)