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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.

A213781 Rectangular array: (row n) = b**c, where b(h) = 1+[h/2], c(h) = n-1+h, n>=1, h>=1, [ ] = floor, and ** = convolution.

Table of values

n a(n)
1 1
2 4
3 2
4 9
5 7
6 3
7 17
8 14
9 10
10 4
11 28
12 25
13 19
14 13
15 5
16 43
17 39
18 33
19 24
20 16
21 6
22 62
23 58
24 50
25 41
26 29
27 19
28 7
29 86
30 81
31 73
32 61
33 49
34 34
35 22
36 8
37 115
38 110
39 100
40 88
41 72
42 57
43 39
44 25
45 9
46 150
47 144
48 134
49 119
50 103
51 83
52 65
53 44
54 28
55 10
56 191
57 185
58 173
59 158
60 138
61 118
62 94
63 73
64 49
65 31

List of values

[1, 4, 2, 9, 7, 3, 17, 14, 10, 4, 28, 25, 19, 13, 5, 43, 39, 33, 24, 16, 6, 62, 58, 50, 41, 29, 19, 7, 86, 81, 73, 61, 49, 34, 22, 8, 115, 110, 100, 88, 72, 57, 39, 25, 9, 150, 144, 134, 119, 103, 83, 65, 44, 28, 10, 191, 185, 173, 158, 138, 118, 94, 73, 49, 31]