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 A268360 #7 Feb 18 2016 05:39:49 %S A268360 9,10,11,12,13,15,17,24,28,32,36,40,44,48,49,52,56,60,68,72,74,76,80, %T A268360 81,84,88,92,96,99,108,109,112,114,116,119,122,123,124,128,130,132, %U A268360 140,149,152,154,156,166,170,171,172,173,174,176,178,179,180,184,188,192,199 %N A268360 "Four"ier sequence: there is a unique base b >= 5 such that (n base b) contains the largest number of 4's. %e A268360 130 is in the list because 130 in base 7 is written 244, and this is the only base where 130 contains two 4's. %Y A268360 See also the Fouriest transform of n, A268236. %K A268360 nonn,base %O A268360 1,1 %A A268360 _Erich Friedman_, Feb 03 2016