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 A115677 #9 Nov 21 2013 12:48:47
%S A115677 6,10,649,1207,54253,56341,60391,66259,66331,101971,155143,166339,
%T A115677 351433,672319,3003193,3054853,5043763,5631229,5858119,6163831,
%U A115677 6256603,6462847,6473899,6556177,6687883,8210989,8236513,8735491,8788033,10716571,11576143
%N A115677 Brilliant numbers (A078972) whose digit reversal is a triangular number.
%e A115677 649=11*59 is brilliant and 946=T(43).
%t A115677 bnoQ[n_]:=Module[{fi=FactorInteger[n],tfi,nn}, tfi=Transpose[fi]; Total[tfi[[2]]]==2 &&IntegerLength[First[tfi[[1]]]] == IntegerLength[Last[tfi[[1]]]]]; tnoQ[n_]:=IntegerQ[(Sqrt[1 +8FromDigits[ Reverse[IntegerDigits[n]]]]-1)/2]; Select[Select[Range[700000], bnoQ], tnoQ] (* _Harvey P. Dale_, Apr 17 2011 *)
%Y A115677 Cf. A078972, A115678.
%K A115677 nonn,base
%O A115677 1,1
%A A115677 _Giovanni Resta_, Jan 31 2006
%E A115677 a(15)-a(31) from _Donovan Johnson_, Apr 26 2011