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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.

A213568 Rectangular array: (row n) = b**c, where b(h) = 2^(h-1), c(h) = n-1+h, n>=1, h>=1, and ** = convolution.

Table of values

n a(n)
1 1
2 4
3 2
4 11
5 7
6 3
7 26
8 18
9 10
10 4
11 57
12 41
13 25
14 13
15 5
16 120
17 88
18 56
19 32
20 16
21 6
22 247
23 183
24 119
25 71
26 39
27 19
28 7
29 502
30 374
31 246
32 150
33 86
34 46
35 22
36 8
37 1013
38 757
39 501
40 309
41 181
42 101
43 53
44 25
45 9
46 2036
47 1524
48 1012
49 628
50 372
51 212
52 116
53 60
54 28
55 10
56 4083
57 3059
58 2035
59 1267

List of values

[1, 4, 2, 11, 7, 3, 26, 18, 10, 4, 57, 41, 25, 13, 5, 120, 88, 56, 32, 16, 6, 247, 183, 119, 71, 39, 19, 7, 502, 374, 246, 150, 86, 46, 22, 8, 1013, 757, 501, 309, 181, 101, 53, 25, 9, 2036, 1524, 1012, 628, 372, 212, 116, 60, 28, 10, 4083, 3059, 2035, 1267]