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 A116119 #6 Jul 22 2021 02:14:42 %S A116119 96,150,186,324,376,666,996,2046,3000,9996,82650,99996,100384,466716, %T A116119 999996,1322316,4049584,9999996,67820074,99999996,110003884,135734074, %U A116119 156502836,196043286,213017754,238849000,261405396,289940826 %N A116119 Numbers k such that k concatenated with k-6 gives the product of two numbers which differ by 7. %e A116119 9802960500//9802960494 = 9900990099 * 9900990106, where // denotes concatenation. %Y A116119 Cf. A116112, A116118, A116132, A116250. %K A116119 nonn,base %O A116119 1,1 %A A116119 _Giovanni Resta_, Feb 06 2006