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 A116159 #6 Jul 20 2021 23:45:51 %S A116159 5,95,216,287,515,675,995,1175,4320,9995,82640,99995,960795,999995, %T A116159 1322312,4049591,9999995,16955015,34602080,99999995,171010235, %U A116159 181964891,183673467,187160072,321920055,326530616,328818032 %N A116159 Numbers k such that k concatenated with itself gives the product of two numbers which differ by 6. %Y A116159 Cf. A115429, A116158, A116160, A116173, A116290. %K A116159 nonn,base %O A116159 1,1 %A A116159 _Giovanni Resta_, Feb 06 2006