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 A038120 #10 Jan 08 2021 01:00:58 %S A038120 1,3,5,16,50,218,937,4494,21517,106401,526132,2623341,13080136, %T A038120 65354995,326546638 %N A038120 Number of distinct n-digit suffixes of base 6 squares not containing digit 0. %Y A038120 Cf. A036688. %K A038120 nonn,base,more %O A038120 0,2 %A A038120 _David W. Wilson_