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 A006388 M1633 #19 Jan 16 2025 14:17:21 %S A006388 1,1,2,6,18,74,393,2282,14700,99614,703519,5123598,38279496 %N A006388 Number of sensed planar maps with n edges and without faces of degree 1. %D A006388 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A006388 Timothy R. Walsh, <a href="http://dx.doi.org/10.1137/0604018">Generating nonisomorphic maps without storing them</a>, SIAM J. Algebraic Discrete Methods 4 (1983), no. 2, 161-178. %Y A006388 Cf. A006384, A006389 (unsensed), A379433 (rooted). %K A006388 nonn,more %O A006388 0,3 %A A006388 _N. J. A. Sloane_ %E A006388 a(8)-a(12) from _Sean A. Irvine_, Mar 28 2017 %E A006388 a(0)=1 prepended by _Andrew Howroyd_, Jan 16 2025