OFFSET
1,1
EXAMPLE
First occurrence of 1 consecutive nonprime gives 4, first occurrence of 2 consecutive nonprimes gives 8 and 9, the first subsequent and disjoint occurrence of 3 consecutive nonprimes gives 14, 15 and 16, etc.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jason Earls, Mar 25 2001
EXTENSIONS
Better description and more terms from Larry Reeves (larryr(AT)acm.org), Apr 02 2001. Further terms from Michel ten Voorde Apr 10 2001.
Missing a(16)=1070 inserted by Sean A. Irvine, Oct 21 2022
STATUS
approved