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 A115670 #4 Nov 25 2015 22:24:56 %S A115670 14,34,35,38,74,91,95,106,118,119,133,134,142,145,146,166,194,301,305, %T A115670 334,346,358,361,362,365,371,377,382,386,391,395,703,706,713,721,731, %U A115670 745,746,749,755,758,763,778,779,785,791,793,799,901,905,914,917,922 %N A115670 Semiprimes (A001358) whose digit reversal is prime. %e A115670 35=5*7 is semiprime and 53 is prime. %Y A115670 Cf. A001358, A083815, A085778, A097393. %K A115670 nonn,base %O A115670 1,1 %A A115670 _Giovanni Resta_, Jan 31 2006