cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A355966 Number of 3-dimensional polyominoes (or polycubes) with n cells that have cavities (inclusions of empty space).

Original entry on oeis.org

20, 404, 6164, 75917, 835491
Offset: 11

Views

Author

Gleb Ivanov, Jul 21 2022

Keywords

Comments

Even if two polycubes are mirror images of each other, they are considered different for this sequence.
Polycubes with less than 11 cells can't have cavities.
Largest enclosed volume >= A355880(n-5) for polycubes with n cells.

Links

Crossrefs

Cf. A001419, A000162, A038119, A355880.
Cf. A357083 (without distinguished reflections).

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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