A324584 - OEIS

A324584

Numbers n that share a prime factor with A276086(n).

3, 9, 10, 15, 20, 21, 25, 27, 33, 35, 39, 40, 42, 45, 49, 50, 51, 55, 56, 57, 63, 69, 70, 75, 77, 80, 81, 84, 85, 87, 91, 93, 98, 99, 100, 105, 110, 111, 112, 115, 117, 119, 123, 126, 129, 130, 133, 135, 140, 141, 145, 147, 153, 154, 159, 160, 161, 165, 168, 170, 171, 175, 177, 182, 183, 189, 190, 195, 196, 200, 201, 203, 205

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OFFSET

1,1

COMMENTS

Numbers n for which A324198(n) <> 1.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10000

Index entries for sequences related to primorial base

Index entries for sequences related to primorial numbers

PROG

(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; };

A324198(n) = gcd(n, A276086(n));

for(n=1, oo, if(1!=A324198(n), print1(n, ", ")));

CROSSREFS

Cf. A276086, A324198.

Cf. A324583 (complement).

Sequence in context: A118515 A191339 A138923 * A325284 A049096 A272653

Adjacent sequences: A324581 A324582 A324583 * A324585 A324586 A324587

KEYWORD

nonn

AUTHOR

Antti Karttunen, Mar 10 2019

STATUS

approved