%I M5118 #16 Feb 27 2017 13:01:33
%S 21,483,15018,258972,5554188,85421118,1558792200,22555934280,
%T 375708427812,5235847653036,82234427131416,1117259292848016,
%U 16842445235560944,224686278407291148,3286157560248860532,43241609165618454096,617910462111714896820
%N Number of rooted genus-2 maps with n edges.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%D T. R. S. Walsh, Combinatorial Enumeration of Non-Planar Maps. Ph.D. Dissertation, Univ. of Toronto, 1971.
%H 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 Row maxima of A269922.
%K nonn
%O 4,1
%A _N. J. A. Sloane_.
%E More terms from _Sean A. Irvine_, Feb 24 2017