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 A179390 #2 Mar 31 2012 14:41:48 %S A179390 1,2,2,3,3,4,4,4,4,5,5,5,6,6,6,6,7,7,7,7,8,8,8,8,8,8,8,8,9,9,9,9,9,10, %T A179390 10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12,12,12,12, %U A179390 12,12,12,12,12,12,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,15,15 %N A179390 Modulus for Fibonacci-type sequence described by A015134. %C A179390 First terms of A015134 are 1, 2, 2 and 4, meaning that there are 1, 2, 2 and 4 Fibonacci-type sequences modulo 1, 2, 3 and 4 respectively. These are: %C A179390 mod 1: 0 %C A179390 mod 2: 0 %C A179390 mod 2: 0,1,1 %C A179390 mod 3: 0 %C A179390 mod 3: 0,1,1,2,0,2,2,1 %C A179390 mod 4: 0 %C A179390 mod 4: 0,1,1,2,3,1 %C A179390 mod 4: 0,2,2 %C A179390 mod 4: 0,3,3,2,1,3 %H A179390 Will Nicholes, <a href="http://willnicholes.com/math/pisano.htm">Fibonacci numbers and Pisano periods</a>. %Y A179390 Cf. A015134, A179391, A179392, A179393. %K A179390 nonn,tabf %O A179390 1,2 %A A179390 _Will Nicholes_, Jul 12 2010