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 A116103 #6 Jul 21 2021 22:46:18 %S A116103 58,1552909498221642960203840517299022287877411846, %T A116103 1723404686015903064905313664707396376746205762, %U A116103 2153694542826970975147295558223788704098018912 %N A116103 Numbers k such that k concatenated with k-8 gives the product of two numbers which differ by 3. %e A116103 58//50 = 75 * 78, where // denotes concatenation. %Y A116103 Cf. A116102, A116104, A116110, A116234. %K A116103 nonn,base %O A116103 1,1 %A A116103 _Giovanni Resta_, Feb 06 2006