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.

A283106 Number of distinct envelope areas of the polyominoes of order n.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 2
5 4
6 5
7 7
8 9
9 11
10 12
11 16
12 18
13 22
14 26
15 30
16 33
17 37
18 41
19 47
20 52
21 58
22 62
23 69
24 74
25 80
26 86
27 92
28 97
29 106
30 112
31 120
32 127
33 135
34 143
35 152
36 159
37 168
38 176
39 186
40 193
41 205
42 213
43 225
44 235
45 246
46 256
47 269
48 281
49 291
50 302

List of values

[1, 1, 1, 2, 2, 4, 5, 7, 9, 11, 12, 16, 18, 22, 26, 30, 33, 37, 41, 47, 52, 58, 62, 69, 74, 80, 86, 92, 97, 106, 112, 120, 127, 135, 143, 152, 159, 168, 176, 186, 193, 205, 213, 225, 235, 246, 256, 269, 281, 291, 302]