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 A195740 #8 Aug 13 2020 14:02:28 %S A195740 29,1247,261,89972,5511,608992,58631,418808411,312221,278668008656, %T A195740 6651971,1886445877264,70864611 %N A195740 Smallest possible largest number of a 5 by n average array where repetitions are allowed with diagonals. %C A195740 Here, an average array is an array of positive numbers such that each number is the average of the numbers in horizontally, vertically and diagonally adjacent cells. %H A195740 Erich Friedman, <a href="https://erich-friedman.github.io/mathmagic/0399.html">Problem of the month March 1999</a> %Y A195740 Cf. A195678 %K A195740 nonn %O A195740 3,1 %A A195740 _Kausthub Gudipati_, Sep 24 2011