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 A216104 #13 Sep 03 2012 10:04:56 %S A216104 7,9,5,3,4,2,2,0,8,3,2,2,9,8,4,5,2,5,5,3,0,0,4,5,3,2,0,8,2,1,4,7,8,2, %T A216104 3,8,6,9,1,2,0,1,5,6,0,2,7,4,0,5,2,6,6,1,6,5,4,8,4,3,9,7,1,2,2,8,3,7, %U A216104 9,4,1,1,4,8,3,6,6,2,6,2,0,8,2,4,3,1,9,6,8,7,3,7,6,2,8,6,6,3,8,4,4,9,0,0,2,0,5,9,3,0,6,1 %N A216104 10's complement of A216105. %C A216104 7^500 ends in 64030001 %C A216104 7^5000 ends in 5640300001 %C A216104 7^50000 ends in 756403000001 %C A216104 7^500000 ends in 77564030000001 %C A216104 The last digits before the zeros tend to converge to A216105. %Y A216104 Cf. A007185, A016090, A091663, A018248, A091664, A018247, A216105. %K A216104 nonn %O A216104 1,1 %A A216104 _V. Raman_, Sep 02 2012