OFFSET
1,1
COMMENTS
Numbers in A013590 that are not squarefree.
PROG
(PARI) is(n)=if (!issquarefree(n), for(k=0, n, if(abs(polcoeff(polcyclo(n), k))>1, return(n))); 0)
for(n=1, 10^4, if(is(n), print1(n, ", "))) \\ edited by Michel Marcus, Apr 21 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Derek Orr, Apr 22 2015
STATUS
approved