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%I M1631 #16 Jun 01 2024 10:14:53
%S 1,1,2,6,18,68,282,1309,6437,33264,177260,968349
%N Triangulations of a square with no separating triangles (previously "Bordered triangulations of sphere with n nodes").
%D H. Heesch, Ein zum Vierfarbensatz aquivalenter Satz der Panisochromie [ A theorem of panisochromaticity equivalent to the four color theorem ], pp. 229-253 of Graph Theory in Memory of G. A. Dirac (Sandbjerg, 1985). Edited by L. D. Andersen et al., Annals of Discrete Mathematics, 41. North-Holland Publishing Co., Amsterdam-New York, 1989.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%K nonn
%O 5,3
%A _N. J. A. Sloane_
%E Terms a(13)-a(16) computed with plantri from _Gordon Royle_, Jun 10 2021