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Number of n-node planar graphs with even degrees.
3

%I #18 Mar 10 2023 10:08:56

%S 1,1,2,3,6,14,36,121,533,3067,21798,180898,1648907,15977626

%N Number of n-node planar graphs with even degrees.

%D M. Kirchweger, M. Scheucher, and S. Szeider, SAT-Based Generation of Planar Graphs, in preparation.

%Y Row sums of A049340.

%Y Euler transform of A049365.

%K nonn,nice,hard,more

%O 1,3

%A _Brendan McKay_

%E a(12) from _Sean A. Irvine_, Jul 30 2021

%E a(13)-a(14) from _Manfred Scheucher_, Mar 8-10 2023