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.

A103469 Number of polyominoes consisting of 3 regular unit n-gons.

Table of values

n a(n)
3 1
4 2
5 2
6 3
7 2
8 3
9 3
10 4
11 4
12 5
13 4
14 5
15 5
16 6
17 6
18 7
19 6
20 7
21 7
22 8
23 8
24 9
25 8
26 9
27 9
28 10
29 10
30 11
31 10
32 11
33 11
34 12
35 12
36 13
37 12
38 13
39 13
40 14
41 14
42 15
43 14
44 15
45 15
46 16
47 16
48 17
49 16
50 17
51 17
52 18
53 18
54 19
55 18
56 19
57 19
58 20
59 20
60 21
61 20
62 21
63 21
64 22
65 22
66 23
67 22
68 23
69 23
70 24
71 24
72 25
73 24
74 25
75 25
76 26
77 26
78 27
79 26
80 27

List of values

[1, 2, 2, 3, 2, 3, 3, 4, 4, 5, 4, 5, 5, 6, 6, 7, 6, 7, 7, 8, 8, 9, 8, 9, 9, 10, 10, 11, 10, 11, 11, 12, 12, 13, 12, 13, 13, 14, 14, 15, 14, 15, 15, 16, 16, 17, 16, 17, 17, 18, 18, 19, 18, 19, 19, 20, 20, 21, 20, 21, 21, 22, 22, 23, 22, 23, 23, 24, 24, 25, 24, 25, 25, 26, 26, 27, 26, 27]

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

Content is available under The OEIS End-User License Agreement.