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 A123570 #20 Oct 20 2018 22:23:03 %S A123570 1,2,9,82,1025,15626,279937,5764802,134217729,3486784402,100000000001, %T A123570 3138428376722,106993205379073,3937376385699290,155568095557812225, %U A123570 6568408355712890626,295147905179352825857,14063084452067724991010 %N A123570 Duplicate of A110567. %K A123570 dead %O A123570 0,2