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A234599
Number of n-celled solid polyominoes (or free polycubes, allowing mirror-image identification) with chessboard coloring.
0
2, 1, 4, 10, 46, 204, 1214, 7497, 50826, 355334, 2559074, 18736327, 139027092
OFFSET
1,1
COMMENTS
Chessboard-colored polycubes, considering to be distinct two solids that cannot be mapped onto each other by any form of symmetry.
FORMULA
a(n) = 2*A038119(n) for odd n.
CROSSREFS
Sequence in context: A085421 A001071 A121198 * A016544 A134028 A111479
KEYWORD
nonn,more
AUTHOR
John Mason, Jan 07 2014
EXTENSIONS
a(12)-a(13) from John Mason, Aug 01 2021
STATUS
approved