A234599 Number of n-celled solid polyominoes (or free polycubes, allowing mirror-image identification) with chessboard coloring.

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.

Links

Table of n, a(n) for n=1..13.

Formula

a(n) = 2*A038119(n) for odd n.

Crossrefs

Cf. A038119, A001933.

Sequence in context: A085421 A001071 A121198 * A016544 A134028 A111479

Adjacent sequences: A234596 A234597 A234598 * A234600 A234601 A234602

Keyword

nonn,more

Author

John Mason, Jan 07 2014

Extensions

a(12)-a(13) from John Mason, Aug 01 2021

Status

approved