Difference between prime factors of n-th semiprime is n.

[zak seidov]

Neil, seqfans,
anybody please may wish to add more terms,
or Neil may wish to accept it as is.
Thanks, Zak

%I A000001
%S A000001 5, 80, 86
%N A000001 Difference between prime factors of n-th
semiprime is n.
%C A000001 No more terms <242556.
%e A000001 sp(5)=14=2*7 and 7-2=5, sp(80)=249=3*83 and
83-3=80, sp(86)=267=3*89 and 89-3=86; sp(n)=nth
semiprime.
%Y A000001 A084126, A084127, A109313
%O A000001 1
%K A000001 ,more,nonn,
%A A000001 Zak Seidov (zakseidov at yahoo.com), Sep 25 2007


       
____________________________________________________________________________________
Yahoo! oneSearch: Finally, mobile search 
that gives answers, not web links. 
http://mobile.yahoo.com/mobileweb/onesearch?refer=1ONXIC