OFFSET
1,2
COMMENTS
Contains all semiprimes (A001358) except 4. - Ivan Neretin, Apr 05 2016
LINKS
Ivan Neretin, Table of n, a(n) for n = 1..10000
MATHEMATICA
Join[{1}, Select[Range[2, 115], ! Divisible[#, PrimeOmega[#]^2] &]] (* Ivan Neretin, Apr 05 2016 *)
PROG
(PARI) lista(nn) = {print1(1, ", "); for(n=2, nn, if(n % bigomega(n)^2 != 0, print1(n, ", "))); } \\ Altug Alkan, Apr 05 2016
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 17 2013
STATUS
approved