A324580 a(n) = n * A276086(n).

0, 2, 6, 18, 36, 90, 30, 70, 120, 270, 450, 990, 300, 650, 1050, 2250, 3600, 7650, 2250, 4750, 7500, 15750, 24750, 51750, 15000, 31250, 48750, 101250, 157500, 326250, 210, 434, 672, 1386, 2142, 4410, 1260, 2590, 3990, 8190, 12600, 25830, 7350, 15050, 23100, 47250, 72450, 148050, 42000, 85750, 131250, 267750, 409500

Offset: 0

Author

Antti Karttunen, Mar 09 2019

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 0..10000
• Index entries for sequences related to primorial base
• Index entries for sequences related to primorial numbers

Crossrefs

Cf. A002110, A276086, A324198, A324577, A324578, A324579, A324582.

Programs

PARI

A276086(n) = { my(i=0,m=1,pr=1,nextpr); while((n>0),i=i+1; nextpr = prime(i)*pr; if((n%nextpr),m*=(prime(i)^((n%nextpr)/pr));n-=(n%nextpr));pr=nextpr); m; };
A324580(n) = n*A276086(n);

Formula

a(n) = n * A276086(n).

For n >= 0, a(A002110(n)) = A002110(1+n).