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Number of polyominoes of order 2n that cannot be tiled by dominoes.
6

%I #12 Jan 30 2023 05:43:22

%S 0,1,12,158,2428,37776,591729,9260272,144869916

%N Number of polyominoes of order 2n that cannot be tiled by dominoes.

%F a(n) + A056785(n) = A210996(n). - _R. J. Mathar_, Jan 30 2023

%Y Cf. A056785, A056786, A213377, A213378.

%K hard,more,nonn

%O 1,3

%A _Joseph Myers_, Jun 10 2012