OFFSET
1,1
LINKS
Daniel C. Mayer, Define an "m-triple" to consist of three consecutive squarefree positive integers, each with exactly m prime divisors, Number Theory group on LinkedIn.com
EXAMPLE
The two squarefree numbers following a(1)=27962, 27965 and 27966, also have 4 prime divisors just as a(1).
MATHEMATICA
Transpose[Select[Partition[Select[Range[230000], SquareFreeQ], 3, 1], PrimeNu[ #] =={4, 4, 4}&]][[1]] (* Harvey P. Dale, Jul 06 2014 *)
PROG
(PARI) (back(n)=for(i=1, 2, until(issquarefree(n--), )); n); for(n=1, 9999, issquarefree(n)||next; ndk==ndm&&omega(n)==ndm&&ndk==4&&print1(back(n)", "); ndk=ndm; ndm=omega(n))
CROSSREFS
KEYWORD
nonn
AUTHOR
M. F. Hasler, May 18 2014
EXTENSIONS
Minor edit by Hans Havermann, Aug 19 2014
STATUS
approved