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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.

A300778 Number of grid points visible from a corner of an m X n rectangular region on a square grid written as triangle T(m,n), 1 <= n <= m.

Table of values

n a(n)
1 3
2 4
3 5
4 5
5 7
6 9
7 6
8 8
9 11
10 13
11 7
12 10
13 14
14 17
15 21
16 8
17 11
18 15
19 18
20 23
21 25
22 9
23 13
24 18
25 22
26 28
27 31
28 37
29 10
30 14
31 20
32 24
33 31
34 34
35 41
36 45
37 11
38 16
39 22
40 27
41 35
42 38
43 46
44 51
45 57
46 12
47 17
48 24
49 29
50 37
51 40
52 49
53 54
54 61
55 65
56 13
57 19
58 27
59 33
60 42
61 46
62 56
63 62
64 70
65 75
66 85

List of values

[3, 4, 5, 5, 7, 9, 6, 8, 11, 13, 7, 10, 14, 17, 21, 8, 11, 15, 18, 23, 25, 9, 13, 18, 22, 28, 31, 37, 10, 14, 20, 24, 31, 34, 41, 45, 11, 16, 22, 27, 35, 38, 46, 51, 57, 12, 17, 24, 29, 37, 40, 49, 54, 61, 65, 13, 19, 27, 33, 42, 46, 56, 62, 70, 75, 85]

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

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