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 A115666 #2 Mar 30 2012 17:40:35 %S A115666 4,6,9,51,94,121,122,143,155,158,169,178,187,319,323,329,335,341,394, %T A115666 398,718,734,737,766,767,781,913,926,949,955,961,979,982,985,989,998, %U A115666 1141,1202,1211,1273,1322,1343,1405,1415,1655,1691,1703,1714,1807 %N A115666 Semiprimes (A001358) whose digit reversal is a brilliant number (A078972). %e A115666 155=5*31 is semiprime and 551=19*29 is brilliant. %Y A115666 Cf. A001358, A078972, A115665. %K A115666 nonn,base %O A115666 1,1 %A A115666 _Giovanni Resta_, Jan 31 2006