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%I #6 Apr 12 2023 10:51:56
%S 1,2,6,34,177,1105,6992,46264,310126,2113012,14539215,100943151
%N a(n) is the number of n-celled one-sided rounded polyominoes
%C See A056840 for the definition of rounded polyominoes.
%Y Cf. A056840, A362223.
%K nonn,more
%O 1,2
%A _John Mason_, Apr 11 2023