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Number of different patterns using tiles from 1*1 to 1*n with each tile flush or diagonal to at least one other.
0

%I #11 May 01 2013 18:52:56

%S 1,1,3,141

%N Number of different patterns using tiles from 1*1 to 1*n with each tile flush or diagonal to at least one other.

%C Similar to A214366, but we can also have:

%C xxx xxxo

%C oo + o

%C +

%C etc...

%e The 3 cases for n=2 are:

%e oo+ oo oo

%e + +

%Y Cf. A214366.

%K nonn

%O 0,3

%A _Jon Perry_, Apr 16 2013