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 A118170 #2 Oct 12 2013 15:18:07 %S A118170 1,1,3,4,5,7,8,9,10,12,13,14,15,17,18,19,20,22,23,24,25,27,28,29,30, %T A118170 31,33,34,35,36,37,39,40,41,42,43,45,46,47,48,49,51,52,53,54,55,57,58, %U A118170 59,60,61,63,64,65,66,67,68,70,71,72,73,74,76,77,78,79,80,81,83,84,85,86 %N A118170 x for which abs(n^n-x!) is minimal for given n. %e A118170 3^3 = 27, the closest x! can get to 27 is 4!, so a(3) = 4 %Y A118170 Cf. A118168, A118169. %K A118170 easy,nonn %O A118170 0,3 %A A118170 _Olaf Voß_, Apr 13 2006