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 A116168 #8 Jul 20 2021 23:46:34 %S A116168 19,32,16284704,35576083,15764836187996024260119639732979, %T A116168 19807200907254352332962649366152,20298517078413563250826300137112, %U A116168 30190765850423053042937262322867,30796637697589506772859224996627 %N A116168 Numbers k such that k concatenated with k+1 gives the product of two numbers which differ by 8. %C A116168 Also numbers k such that k concatenated with k+8 gives the product of two numbers which differ by 6. %e A116168 35576083//35576084 = 59645686 * 59645694, where // denotes concatenation. %e A116168 35576083//35576091 = 59645687 * 59645693. %Y A116168 Cf. A116161, A116167, A116169, A116174, A116299. %Y A116168 Cf. A116208, A115430, A116215, A116345. %K A116168 nonn,base %O A116168 1,1 %A A116168 _Giovanni Resta_, Feb 06 2006 %E A116168 Edited by _N. J. A. Sloane_, Apr 15 2007