OFFSET
1,1
COMMENTS
Subsequence of A048943. According to Gerard P. Michon, one of the criteria for N to belong to A048943 is that it has at least two prime factors with odd multiplicities. By definition, the composite factor c in any term of A229153 conforms to this criterion.
From a(1) to a(63), identical to the given terms of A119847, except for the single term a(55) = 120.
LINKS
Chris Boyd, Table of n, a(n) for n = 1..10000
PROG
(PARI) iscomposite(n)={if(!isprime(n)&&n!=1, return(1)); }
test(n)={if(iscomposite(core(n)), return(1)); }
for(n=1, 200, if(test(n)==1, print1(n", ")))
(PARI) lista(nn) = {for(n=1, nn, if(!ispseudoprime(core(n)) && !issquare(n), print1(n, ", "))); } \\ Altug Alkan, Feb 04 2016
(PARI) list(lim)=my(v=List()); forsquarefree(c=6, lim\=1, if(#c[2]~ > 1, for(m=1, sqrtint(lim\c[1]), listput(v, c[1]*m^2)))); Set(v) \\ Charles R Greathouse IV, Jan 09 2022
CROSSREFS
KEYWORD
nonn
AUTHOR
Chris Boyd, Sep 15 2013
STATUS
approved