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Number of free 4-dimensional polyhypercubes with n cells, allowing corner-, edge-, and face-connections.
2

%I #17 Nov 02 2023 14:19:39

%S 1,3,25,715,38008

%N Number of free 4-dimensional polyhypercubes with n cells, allowing corner-, edge-, and face-connections.

%H <a href="/index/Pol#polyominoes">Index entries for sequences related to polyominoes</a>.

%Y 153rd row of A366766.

%Y Cf. A068870, A272368.

%Y See A365366 for a table of similar sequences.

%K nonn,hard,more

%O 1,2

%A _Pontus von Brömssen_, Sep 03 2023