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A115158 Number of divisors of A006558(n). 1
1, 2, 4, 6, 8, 8, 8, 24, 24, 24 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n) is divisible by 3 for n > 7.

More generally, a(n) is divisible by m for all n >= 2^m. - Max Alekseyev, Aug 05 2015

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

phi(33) = phi(34) = phi(35) = 4, so a(3)=4.

CROSSREFS

Cf. A006558.

Sequence in context: A166880 A079088 A161661 * A107634 A060659 A244363

Adjacent sequences:  A115155 A115156 A115157 * A115159 A115160 A115161

KEYWORD

nonn,more,hard

AUTHOR

Jud McCranie, Jan 14 2006

EXTENSIONS

a(10) from Jud McCranie, Nov 27 2018

STATUS

approved

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Last modified February 19 21:59 EST 2019. Contains 320328 sequences. (Running on oeis4.)