[seqfan] Exercises in what? Logic, English, or Writing?

Klaus Brockhaus klaus-brockhaus at t-online.de
Mon Mar 1 13:59:17 CET 2010

%N A002822 Numbers n such that 6n-1, 6n+1 are twin primes.
%C A002822 Numbers n such that neither 6*n-+1 is nonprime. ..... [From 
....., Feb 14 2010]

Could you imagine that this is possible? How about a comment in A000040, 
"Numbers that are not nonprime"?

More information about the SeqFan mailing list