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A328835 a(n) = A181819(A276086(n)). 4
1, 2, 2, 4, 3, 6, 2, 4, 4, 8, 6, 12, 3, 6, 6, 12, 9, 18, 5, 10, 10, 20, 15, 30, 7, 14, 14, 28, 21, 42, 2, 4, 4, 8, 6, 12, 4, 8, 8, 16, 12, 24, 6, 12, 12, 24, 18, 36, 10, 20, 20, 40, 30, 60, 14, 28, 28, 56, 42, 84, 3, 6, 6, 12, 9, 18, 6, 12, 12, 24, 18, 36, 9, 18, 18, 36, 27, 54, 15, 30, 30, 60, 45, 90, 21, 42, 42, 84, 63, 126, 5, 10, 10, 20, 15, 30, 10, 20, 20 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..30030

Index entries for sequences related to primorial numbers

FORMULA

a(n) = A181819(A276086(n)).

A001222(a(n)) = A267263(n).

A007814(a(n)) = A328614(n).

A061395(a(n)) = A328114(n).

PROG

(PARI)

A181819(n) = factorback(apply(e->prime(e), (factor(n)[, 2])));

A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); };

A328835(n) = A181819(A276086(n));

CROSSREFS

Cf. A001222, A007814, A061395, A181819, A267263, A276086, A328114, A328614.

Cf. A275735 for analogous sequence.

Sequence in context: A227154 A324655 A275735 * A076435 A257010 A156864

Adjacent sequences:  A328832 A328833 A328834 * A328836 A328837 A328838

KEYWORD

nonn

AUTHOR

Antti Karttunen, Oct 29 2019

STATUS

approved

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Last modified April 3 23:48 EDT 2020. Contains 333207 sequences. (Running on oeis4.)