[seqfan] Re: Do 20 and 105 eventually reach a prime in these sequences?

[N. J. A. Sloane]

Al, maybe you - assisted by the gang - could
add an a-file to A195264, giving the known values
and a question mark ("no prime found after 50 or more terms")
for the open cases.

I say an a-file rather than a b-file, because we don't
actually know a(20) is -1.

the procedure for uploading an a-file
is the same as for a b-file

Thanks


 Best regards
 			 Neil