(In reply to Sloaneable (spoiler)
If you make the blanks 'wildcards' i.e. do not put a comma after 3, 17,29, you should get A001605 right away.
It is necessary, although not sufficient, for the nth Fibonacci Number to be prime, if its index is prime, see Fibo Composes
Edited on June 8, 2011, 1:58 am
Posted by broll
on 2011-06-08 01:41:07