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.

A137228 Minimal total number of edges in a polyiamond consisting of n triangular cells.

Table of values

n a(n)
1 3
2 5
3 7
4 9
5 11
6 12
7 14
8 16
9 18
10 19
11 21
12 23
13 24
14 26
15 28
16 29
17 31
18 33
19 34
20 36
21 38
22 39
23 41
24 42
25 44
26 46
27 47
28 49
29 51
30 52
31 54
32 55
33 57
34 59
35 60
36 62
37 63
38 65
39 67
40 68
41 70
42 71
43 73
44 75
45 76
46 78
47 79
48 81
49 83
50 84
51 86
52 87
53 89
54 90
55 92
56 94
57 95
58 97
59 98
60 100
61 102
62 103
63 105
64 106
65 108
66 109
67 111
68 113

List of values

[3, 5, 7, 9, 11, 12, 14, 16, 18, 19, 21, 23, 24, 26, 28, 29, 31, 33, 34, 36, 38, 39, 41, 42, 44, 46, 47, 49, 51, 52, 54, 55, 57, 59, 60, 62, 63, 65, 67, 68, 70, 71, 73, 75, 76, 78, 79, 81, 83, 84, 86, 87, 89, 90, 92, 94, 95, 97, 98, 100, 102, 103, 105, 106, 108, 109, 111, 113]

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

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