OFFSET
1,2
COMMENTS
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..10000
EXAMPLE
8 = 2^3 belongs to this sequence.
24 = 3*2^3 does not belong to this sequence.
PROG
(PARI) a279513(n) = my (f=factor(n)); prod(i=1, #f~, f[i, 1]*a279513(f[i, 2]));
isok(n) = issquarefree(a279513(n)); \\ Michel Marcus, Apr 08 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Apr 02 2017
STATUS
approved