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A118638
Lesser of a twin-prime pair where both are expressible as the sum of two triangular numbers.
2
11, 29, 137, 191, 461, 659, 821, 1091, 1721, 2027, 2081, 2711, 3359, 3539, 3917, 6131, 6761, 7589, 7877, 7949, 8219, 9461, 9857, 11351, 12107, 12377, 13691, 13997, 14447, 16139, 16229, 17291, 17417, 17579, 18911, 19469, 19541, 19991, 20549, 20639, 20747, 20981
OFFSET
1,1
COMMENTS
A bisection of A117314. Thought more interesting by Robert G. Wilson v.
LINKS
EXAMPLE
a(1) = 11 = 1 + 10;
a(2) = 29 = 1 + 28.
CROSSREFS
KEYWORD
nonn
AUTHOR
Greg Huber, May 09 2006
EXTENSIONS
a(40) inserted by Amiram Eldar, Dec 27 2019
STATUS
approved