A068870 Number of polyhypercubes or 4-dimensional polyominoes with n cells (regarding mirror-images as identical).

1, 1, 1, 2, 7, 26, 147, 1019, 8699, 82535, 846042, 9078720

Offset

0,4

Links

Table of n, a(n) for n=0..11.

Don Reble, C++ Program

Crossrefs

Excluding a(0), 140th row of A366766.

Cf. A049429, A049430, A255487.

Sequence in context: A300049 A209005 A361242 * A345682 A005519 A290305

Adjacent sequences: A068867 A068868 A068869 * A068871 A068872 A068873

Keyword

hard,nonn,more

Author

Franklin T. Adams-Watters, Mar 29 2002

Extensions

a(10) and a(11) from Don Reble, Feb 25 2015. - N. J. A. Sloane, Mar 01 2015

Status

approved