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 A006299 M5118 #20 Jul 08 2025 16:46:42 %S A006299 21,483,15018,258972,5554188,85421118,1558792200,22555934280, %T A006299 375708427812,5235847653036,82234427131416,1117259292848016, %U A006299 16842445235560944,224686278407291148,3286157560248860532,43241609165618454096,617910462111714896820 %N A006299 Number of rooted genus-2 maps with n edges. %D A006299 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %D A006299 T. R. S. Walsh, Combinatorial Enumeration of Non-Planar Maps. Ph.D. Dissertation, Univ. of Toronto, 1971. %H A006299 T. R. S. Walsh and A. B. Lehman, <a href="http://dx.doi.org/10.1016/0095-8956(72)90056-1">Counting rooted maps by genus</a>, J. Comb. Thy B13 (1972), 122-141 and 192-218. %Y A006299 Row maxima of A269922. %K A006299 nonn %O A006299 4,1 %A A006299 _N. J. A. Sloane_ %E A006299 More terms from _Sean A. Irvine_, Feb 24 2017