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 A247057 #10 Jan 25 2019 08:30:40 %S A247057 1,1,3,12,76,631,5952,61642,724536,10132749,169431706 %N A247057 Number of endofunctions on [n] that are the 10th power of an endofunction. %e A247057 a(3) = 12: (1,1,1), (1,1,3), (1,2,1), (1,2,2), (1,2,3), (1,3,3), (2,2,2), (2,2,3), (2,3,1), (3,1,2), (3,2,3), (3,3,3). %Y A247057 Column k=10 of A247026. %K A247057 nonn,more %O A247057 0,3 %A A247057 _Alois P. Heinz_, Sep 10 2014 %E A247057 a(8)-a(10) from _Bert Dobbelaere_, Jan 25 2019