A385400 a(n) is the number of free polyominoids that have faces aligned to precisely 3 planes.
0, 0, 2, 16, 239, 3154, 42225, 561178, 7459089
Offset: 1
Links
- John Mason, Illustration of size 4 polyominoids
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.
