OFFSET
1,1
COMMENTS
Here, prime gap is defined as the number of composites between a prime and the next prime.
LINKS
Caldwell and Honaker, Prime Curios!
EXAMPLE
a(4) = 491 because 491 (followed by 7 composites) 499 (followed by 3 composites) 503 (followed by 5 composites) 509 (followed by 11 composites) 521, and {7, 3, 5, 11} are 4 consecutive distinct prime prime gaps.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
G. L. Honaker, Jr., Mar 09 2018
EXTENSIONS
a(5)-a(12) from Chuck Gaydos
a(13)-a(18) from Giovanni Resta, Mar 19 2018
STATUS
approved