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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.

A341219 Number of well-connected free polyominoes with n cells, where a polyomino is defined as well-connected if, for all the squares it contains, the removal of that single square would result in an intact polyomino.

Table of values

n a(n)
0 1
1 1
2 1
3 0
4 1
5 0
6 1
7 0
8 3
9 1
10 6
11 2
12 25
13 18
14 88

List of values

[1, 1, 1, 0, 1, 0, 1, 0, 3, 1, 6, 2, 25, 18, 88]

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