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 A116182 #6 Jul 19 2021 22:37:31 %S A116182 3,14879,37733,78677,1358679,3986627,5217267,71097587,96105783, %T A116182 119085207401333056054787,163143914551633969404033, %U A116182 355322363584753736584499,428910715257982234999959 %N A116182 Numbers k such that k concatenated with k+3 gives the product of two numbers which differ by 9. %e A116182 96105783//96105786 = 98033553 * 98033562, where // denotes %e A116182 concatenation. %Y A116182 Cf. A116175, A116181, A116190, A116313. %K A116182 nonn,base %O A116182 1,1 %A A116182 _Giovanni Resta_, Feb 06 2006