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 A103949 #14 Sep 08 2015 17:35:11
%S A103949 1,256,100,116,73,148,44,148,73,116,76,148,41,148,76,116,73,148,44,
%T A103949 148,73,116,76,148,41,148,76,116,73,148,44,148,73,116,76,148,41,148,
%U A103949 76,116,73,148,44,148,73,116,76,148,41,148,76,116,73,148,44,148,73,116,76,148
%N A103949 a(n) is the number of distinct n-th powers of functions {1, 2, 3, 4} -> {1, 2, 3, 4}.
%C A103949 For n > 2, a(n) = a(n+12).
%H A103949 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (-1, -1, 0, 1, 1, 1).
%F A103949 G.f.: (24*x^8+132*x^7+92*x^6-80*x^5-288*x^4-472*x^3-357*x^2-257*x-1) / ((x-1)*(x+1)*(x^2+1)*(x^2+x+1)). - _Colin Barker_, Aug 07 2013
%t A103949 LinearRecurrence[{-1,-1,0,1,1,1},{1,256,100,116,73,148,44,148,73},60] (* _Harvey P. Dale_, Jun 22 2015 *)
%Y A103949 Cf. A102687, A102709, A103947, A103948, A103950.
%Y A103949 Row n=4 of A247026.
%K A103949 easy,nonn
%O A103949 0,2
%A A103949 _David Wasserman_, Feb 21 2005