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Number of rooted toroidal maps with 3 vertices and n faces and no isthmuses.
(Formerly M4751)
1

%I M4751 #10 Apr 05 2021 11:46:11

%S 10,340,5846,71372,706068,6052840,46759630,333746556,2238411692,

%T 14277544216,87376309020,516495616120,2964332933800,16586670357200,

%U 90782049175614,487329793111260,2571575908919740,13364166071956280,68507393061864020,346874109053120616

%N Number of rooted toroidal maps with 3 vertices and n faces and no isthmuses.

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%H T. R. S. Walsh and A. B. Lehman, <a href="http://dx.doi.org/10.1016/0095-8956(75)90050-7">Counting rooted maps by genus. III: Nonseparable maps</a>, J. Combinatorial Theory Ser. B 18 (1975), 222-259.

%Y A diagonal of A343092.

%K nonn

%O 1,1

%A _N. J. A. Sloane_

%E Name clarified and terms a(10) and beyond from _Andrew Howroyd_, Apr 05 2021