OFFSET
1,1
COMMENTS
Except for a(1) = 2, only primes of even subscript (i.e. members of A031215) occur.
MAPLE
seq(ithprime(ithprime(n+1)-ithprime(n)), n=1..100); # Robert Israel, Feb 12 2015
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Labos Elemer, Apr 23 2003
EXTENSIONS
Comment corrected by Robert Israel, Feb 12 2015
STATUS
approved