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 A183269 #7 May 12 2020 19:56:14 %S A183269 17512704,1367568384,58754129408,1843339782144,47298056693760, %T A183269 1054131373473792,21169370030997504,392511831512186880, %U A183269 6834948232630632448,113176578627741941760,1798774633880898895872,27638898445971890896896,412895207257905223434240,6024032120226517270659072 %N A183269 Number of singly defective permutations of 1..n+10 with exactly 6 maxima. %C A183269 A singly defective permutation omits one value and repeats another value. %H A183269 Andrew Howroyd, <a href="/A183269/b183269.txt">Table of n, a(n) for n = 1..200</a> %Y A183269 Column 6 of A183270. %K A183269 nonn %O A183269 1,1 %A A183269 _R. H. Hardin_, Jan 03 2011 %E A183269 Terms a(6) and beyond from _Andrew Howroyd_, May 12 2020