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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.

A163621 Square array read by antidiagonals: Write n and m in binary with n on the left. Concatenate. a(n,m) is the decimal equivalent of the result.

Table of values

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

List of values

[3, 5, 6, 7, 10, 7, 9, 14, 11, 12, 11, 18, 15, 20, 13, 13, 22, 19, 28, 21, 14, 15, 26, 23, 36, 29, 22, 15, 17, 30, 27, 44, 37, 30, 23, 24, 19, 34, 31, 52, 45, 38, 31, 40, 25, 21, 38, 35, 60, 53, 46, 39, 56, 41, 26, 23, 42, 39, 68, 61, 54, 47, 72, 57, 42, 27, 25, 46, 43, 76, 69]

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