A348949 a(n) = A003959(A276086(n)), where A003959 is multiplicative with a(p^e) = (p+1)^e, and A276086 gives the prime product form of primorial base expansion of n.

1, 3, 4, 12, 16, 48, 6, 18, 24, 72, 96, 288, 36, 108, 144, 432, 576, 1728, 216, 648, 864, 2592, 3456, 10368, 1296, 3888, 5184, 15552, 20736, 62208, 8, 24, 32, 96, 128, 384, 48, 144, 192, 576, 768, 2304, 288, 864, 1152, 3456, 4608, 13824, 1728, 5184, 6912, 20736, 27648, 82944, 10368, 31104, 41472, 124416, 165888, 497664, 64

Offset

0,2

Links

Antti Karttunen, Table of n, a(n) for n = 0..11550

Index entries for sequences related to primorial base

Formula

a(n) = A003959(A276086(n)).

a(n) = A276086(n) + A348950(n).

Prog

(PARI) A348949(n) = { my(m=1, p=2); while(n, m *= ((1+p)^(n%p)); n = n\p; p = nextprime(1+p)); (m); };

Crossrefs

Cf. A003959, A276086, A348950, A348997, A348999.

Cf. also A324653, A346470, A348996.

Sequence in context: A280650 A282458 A360755 * A084221 A142866 A274224

Adjacent sequences: A348946 A348947 A348948 * A348950 A348951 A348952

Keyword

nonn,base,easy

Author

Antti Karttunen, Nov 07 2021

Status

approved