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A075679 Number of free (rotations and reflections count as same shape) polyominoids (shapes made of faces of cubes) with n squares. 12

%I #15 Nov 05 2023 11:02:02

%S 1,2,9,54,448,4650,53611,655033,8259635,106371085,1391032357,

%T 18412269694

%N Number of free (rotations and reflections count as same shape) polyominoids (shapes made of faces of cubes) with n squares.

%H John Mason, <a href="/A075679/a075679.pdf">Drawings of polyominoids of sizes 1 through 5</a>

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Polyominoid">Polyominoid</a>

%Y Cf. A075678, A056846.

%Y 18th row of A366766.

%K hard,more,nonn

%O 1,2

%A _Joseph Myers_, Sep 24 2002

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)