This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A118638 #7 Dec 27 2019 11:55:32 %S A118638 11,29,137,191,461,659,821,1091,1721,2027,2081,2711,3359,3539,3917, %T A118638 6131,6761,7589,7877,7949,8219,9461,9857,11351,12107,12377,13691, %U A118638 13997,14447,16139,16229,17291,17417,17579,18911,19469,19541,19991,20549,20639,20747,20981 %N A118638 Lesser of a twin-prime pair where both are expressible as the sum of two triangular numbers. %C A118638 A bisection of A117314. Thought more interesting by _Robert G. Wilson v_. %H A118638 Amiram Eldar, <a href="/A118638/b118638.txt">Table of n, a(n) for n = 1..10000</a> %e A118638 a(1) = 11 = 1 + 10; %e A118638 a(2) = 29 = 1 + 28. %Y A118638 Cf. A117314, A117313, A117048, A117112, A001097. %K A118638 nonn %O A118638 1,1 %A A118638 _Greg Huber_, May 09 2006 %E A118638 a(40) inserted by _Amiram Eldar_, Dec 27 2019