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A309159 Number of generalized polyforms on the snub square tiling with n cells. 0


%S 1,2,2,4,10,28,79,235,720,2254,7146,22927,74137,241461,790838,2603210,

%T 8604861,28549166,95027832,317229779,1061764660,3562113987,11976146355

%N Number of generalized polyforms on the snub square tiling with n cells.

%C The generalized polyforms counted by this sequence are "free", which means that they are counted up to rotation and reflection.

%H Peter Kagey, <a href="https://codegolf.stackexchange.com/q/187763/53884">Counting generalized polyominoes</a>

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Snub_square_tiling">Snub square tiling</a>

%Y Cf. A000105, A000228, A000577.

%K nonn

%O 0,2

%A _Peter Kagey_ and Peter Taylor, Jul 15 2019

%E a(19)-a(22) from _Christian Sievers_

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Last modified January 19 04:09 EST 2020. Contains 331031 sequences. (Running on oeis4.)