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 A174987 #8 Apr 25 2020 03:18:21 %S A174987 4,4,4,3,4,5,6,4,4,4,3,4,5,6,4,6,5,4,4,4,5,4,4,3,4,4,4,4,4,4,6,3,3,4, %T A174987 5,3,4,3,3,3,4,5,5,6,4,5,4,5,5,5,4,6,6,4,6,6,5,6,6,6,4,5,5,6,4,5,4,5, %U A174987 5,5,4,4,6,4,5,4,6,6,6,6,5,6,6,5,4,6,4,6,6,6,4,6,5,4,4,4,5,4,4,4 %N A174987 Start with n, iterate the map k -> A167507(k) until we reach 3, 4, 5 or 6; a(n) = which of 3, 4, 5 or 6 we reach first. %Y A174987 Cf. A167507, A174984, A174985. %K A174987 nonn,base %O A174987 1,1 %A A174987 _Jacques ALARDET_, Apr 03 2010 %E A174987 Edited by _N. J. A. Sloane_, Apr 05 2010