A319344 - OEIS

A319344

a(n) = Product_{d|n, d>1} prime(A318881(d)), where A318881(d) records the prime signature of A000010(d).

1, 2, 3, 6, 5, 18, 7, 30, 21, 50, 7, 270, 11, 98, 195, 390, 17, 882, 11, 1950, 231, 98, 7, 17550, 55, 242, 231, 3234, 11, 76050, 19, 6630, 231, 578, 805, 145530, 29, 242, 759, 165750, 23, 106722, 19, 3234, 31395, 98, 7, 3878550, 133, 6050, 1581, 16698, 11, 106722, 805, 371910, 957, 242, 7, 252105750, 37, 722, 46893, 205530, 2255, 106722, 19

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..8192

FORMULA

a(n) = Product_{d|n, d>1} prime(A318881(d)).

PROG

(PARI) A319344(n) = { my(m=1); fordiv(n, d, if((d>1), m *= prime(A318881(d)))); (m); }; \\ Needs also code from A318881

CROSSREFS

Cf. A318881, A319342, A319345 (rgs-transform).

Cf. also A305984.