OFFSET
1,1
COMMENTS
Corresponding values of primes q: 5,13,11,17,47,41,53,47,59,107,67,103,107,...
Among first 10000 terms, maximal value of q = 238859 is at n=9924.
Indices, i, of triangulars t: 2,4,3,4,8,7,8,7,8,12,8,11,11,11,11,12,12.,...
Among first 10000 terms, maximal value of i = 519 are for n = 8782, 9074, 9719, 9912, 9924.
EXAMPLE
q=2+3=5, q=3+10=13, q=5+6=11 all prime.
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Nov 12 2014
STATUS
approved