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 A062172 #8 Mar 30 2012 18:51:34 %S A062172 0,1,0,1,0,0,1,1,1,0,1,0,0,0,0,1,1,3,1,1,0,1,2,1,0,1,0,0,1,1,3,1,1,0, %T A062172 1,0,1,0,1,4,0,0,1,0,0,1,4,3,1,5,1,3,1,1,0,1,2,0,0,1,0,1,0,0,0,0,1,1, %U A062172 3,7,5,1,1,1,1,1,1,0,1,8,1,4,7,0,0,2,1,0,1,0,0,1,1,3,1,5,0,7,1,3,0,3,0,1,0 %N A062172 Table T(n,k) by antidiagonals of n^(k-1) mod k [n,k > 0]. %H A062172 <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a> %H A062172 <a href="/index/Ca#Carmichael">Index entries for sequences related to Carmichael numbers.</a> %e A062172 T(5,3)=5^(3-1) mod 3=25 mod 3=1. Rows start (0,1,1,1,1,...), (0,0,1,0,1,...), (0,1,0,3,1...), (0,0,1,0,1,...), (0,1,1,1,0,...), ... %Y A062172 Cf. A002997, A060154. Rows include A057427, A062173, A062174, A062175, A062176. Columns include A000004, A000035, A011655, A010684 with interleaved 0's, A011558, A010875. Diagonals include all the rows again and A000004 and A009001 unsigned. %K A062172 nonn,tabl %O A062172 1,18 %A A062172 _Henry Bottomley_, Jun 12 2001