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 A004252 M1196 #9 Jan 31 2022 01:30:41 %S A004252 1,2,4,9,26,95 %N A004252 Path sums of n-point graphs. %D A004252 A. K. Dewdney, Three classes of graph invariants and their powers, pp. 243-263 of Proc. 9th S-E Conf. Combinatorics, Graph Theory, Computing, Congr. Numer. 21 (1978). %D A004252 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %K A004252 nonn,more,nice %O A004252 1,2 %A A004252 _N. J. A. Sloane_