%I
%S 73,1811,7817,7927,11701,12611,14431,14831,15101,15241,15541,15601,
%T 16111,16451,16651,17021,18671,18731,19181,19541,19681,19841,32213,
%U 32713,33223,33623,33923,35803,36013,36353,36913,37123,37363,37463,37963,39383,39983,71707
%N Larger of pairs of emirps (A006567) whose difference with the (smaller) reversal is a triangular number (A000217).
%C Related to A217386 as triangular numbers (A000217) are to squares (A000290), but in the current sequence, only the larger of each emirp pair is used.
%H Alois P. Heinz, <a href="/A217286/b217286.txt">Table of n, a(n) for n = 1..100</a>
%F {k: k is in A006567 and k  A004086(k) is in A000217}.
%e a(1) = 73 because 73  37 = 36 = 8th triangular number.
%e a(2) = 1811 because R(1811) = A004086(1811) = 1181, and 1811  1181 = 630 = 35th triangular number.
%e a(3) = 7817 because 7817  7187 = 630 = 35th triangular number.
%e a(4) = 7927 because 7927  7297 = 630 = 35*36/2.
%Y Cf. A000217, A004086, A006567, A217386.
%K nonn,base,easy
%O 1,1
%A _Jonathan Vos Post_, Oct 02 2012
%E More terms from _Alois P. Heinz_, Oct 03 2012
