OFFSET
1,1
COMMENTS
Enoch Haga asks if this is a finite sequence. The larger these numbers get, the more opportunity for more factors.
LINKS
Harry J. Smith, Table of n, a(n) for n=1,...,100
Hisanori Mishima, Factorization results
Eric Weisstein's World of Mathematics, Semiprime.
FORMULA
EXAMPLE
E.g., the 808th partition number 8151756509675604512522473567 = 5963320232189 * 1366982853893003.
MATHEMATICA
Select[PartitionsP[Range[0, 450]], PrimeOmega[#]==2&] (* Harvey P. Dale, Sep 19 2016 *)
PROG
(PARI) { n=0; for (m=1, 10^9, p=numbpart(m); if (bigomega(p) == 2, write("b065728.txt", n++, " ", p); if (n==100, return)) ) } \\ Harry J. Smith, Oct 28 2009
CROSSREFS
KEYWORD
nonn
AUTHOR
Patrick De Geest, Nov 18 2001
EXTENSIONS
OFFSET changed from 0,1 to 1,1 by Harry J. Smith, Oct 28 2009
STATUS
approved