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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.

A128442 Array T by antidiagonals: T(n,k)=Floor(k*2^(n/2)).

Table of values

n a(n)
1 1
2 2
3 2
4 4
5 4
6 2
7 5
8 6
9 5
10 4
11 7
12 8
13 8
14 8
15 5
16 8
17 10
18 11
19 12
20 11
21 8
22 9
23 12
24 14
25 16
26 16
27 16
28 11
29 11
30 14
31 16
32 20
33 22
34 24
35 22
36 16
37 12
38 16
39 19
40 24
41 28
42 32
43 33
44 32
45 22
46 14
47 18
48 22
49 28
50 33
51 40
52 45
53 48
54 45
55 32
56 15
57 20
58 25
59 32
60 39
61 48
62 56
63 64
64 67
65 64
66 45
67 16
68 22
69 28
70 36
71 45
72 56
73 67
74 80
75 90

List of values

[1, 2, 2, 4, 4, 2, 5, 6, 5, 4, 7, 8, 8, 8, 5, 8, 10, 11, 12, 11, 8, 9, 12, 14, 16, 16, 16, 11, 11, 14, 16, 20, 22, 24, 22, 16, 12, 16, 19, 24, 28, 32, 33, 32, 22, 14, 18, 22, 28, 33, 40, 45, 48, 45, 32, 15, 20, 25, 32, 39, 48, 56, 64, 67, 64, 45, 16, 22, 28, 36, 45, 56, 67, 80, 90]

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