A377128 Number of polycubes of size n and symmetry class BD.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 1, 0, 1, 0, 0, 4, 2, 2, 3, 4, 0, 23, 7, 5, 10, 3, 1, 48, 16, 19, 28, 49, 2, 174, 49, 58, 84, 46, 18, 406, 111, 169, 238, 424, 34, 1285, 321, 524, 678, 410, 153, 3139, 747, 1393, 1872, 3185

Offset

1,34

Comments

See link "Counting free polycubes" for explanation of notation.

Links

Table of n, a(n) for n=1..80.

John Mason, Counting free polycubes

Crossrefs

Cf. A000162, A038119.

Sequence in context: A307791 A307766 A025443 * A120080 A227570 A352269

Adjacent sequences: A377125 A377126 A377127 * A377129 A377130 A377131

Keyword

nonn

Author

John Mason, Oct 17 2024

Status

approved