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 A127037 #4 Sep 04 2015 10:25:06 %S A127037 0,0,0,1,1,2,2,3,4,5,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,23, %T A127037 24,25,26,27,28,30,31,32,33,34,36,37,38,39,41,42,43,45,46,47,49,50,51, %U A127037 53,54,55,57,58,59,61,62,64 %N A127037 Maximal value of m such that 19^m <= n! : a(n) = floor( log(n!) / log(19) ). %o A127037 (PARI) a(n)=lngamma(n+1)\log(19) \\ _Charles R Greathouse IV_, Sep 04 2015 %o A127037 (PARI) a(n)=logint(n!,19) \\ _Charles R Greathouse IV_, Sep 04 2015 %Y A127037 Cf. A067850, A127031, A127032, A127033, A127034, A127035, A127036, A127037, A127039. %K A127037 nonn %O A127037 1,6 %A A127037 _Artur Jasinski_, Jan 03 2007