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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.

A056846 Number of polyominoids containing n squares: these are 2-dimensional polyominoes in a three-dimensional grid (edge-connected squares, like the floors, ceilings and walls of a building). Mirror images are distinguished.

Table of values

n a(n)
1 1
2 2
3 11
4 80
5 780
6 8781
7 104828
8 1298506
9 16462696
10 212457221
11 2780615627
12 36817036777

List of values

[1, 2, 11, 80, 780, 8781, 104828, 1298506, 16462696, 212457221, 2780615627, 36817036777]

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

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