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 A175290 #4 Aug 10 2012 09:46:55 %S A175290 1,3,1,3,4,3,42,6,1,12,120,3,84,42,4,12,16,3,90,12,42,120,176,6,20,84, %T A175290 1,42,280,12,480,24,120,48,84,3,36,90,84,12,40,42,42,120,4,528,46,12, %U A175290 294,60,16,84,2808,3,120,42,90,840,58,12,310,480,42,48,84,120,33,48,176,84,5040,6,888,36,20,90,840,84,39,12 %N A175290 Pisano period of A030195 modulo n. %e A175290 Reading 0, 1, 3, 12, 45, 171, 648, 2457, 9315, 35316, 133893 .. modulo n=3 gives 0, 1, 0, 0, 0, 0, 0, .. with period length a(n=3)= 1. %e A175290 Reading modulo n=6 gives 0, 1, 3, 0, 3, 3, 0, 3, 3 with period length a(n=6)=3. %Y A175290 Cf. A001175, A046738, A175181 - A175185, A175286. %K A175290 nonn %O A175290 1,2 %A A175290 _R. J. Mathar_, Mar 24 2010