OFFSET
1,1
LINKS
Paul D. Hanna, Table of n, a(n) for n = 1..287
FORMULA
a(n) = prime(n*(n-1)/2 + 1) - prime(n*(n-1)/2) for n>1 with a(1)=2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Mar 04 2013
STATUS
approved