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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.

A213853 Rectangular array: (row n) = b**c, where b(h) = h, c(h) = binomial(2*n-4+2*h,n-2+h), n>=1, h>=1, and ** = convolution.

Table of values

n a(n)
1 1
2 4
3 2
4 13
5 10
6 6
7 42
8 38
9 32
10 20
11 141
12 136
13 128
14 110
15 70
16 492
17 486
18 476
19 452
20 392
21 252
22 1767
23 1760
24 1748
25 1718
26 1638
27 1428
28 924
29 6474
30 6466
31 6452
32 6416
33 6316
34 6036
35 5280
36 3432
37 24051
38 24042
39 24026
40 23984
41 23864
42 23514
43 22506
44 19734
45 12870

List of values

[1, 4, 2, 13, 10, 6, 42, 38, 32, 20, 141, 136, 128, 110, 70, 492, 486, 476, 452, 392, 252, 1767, 1760, 1748, 1718, 1638, 1428, 924, 6474, 6466, 6452, 6416, 6316, 6036, 5280, 3432, 24051, 24042, 24026, 23984, 23864, 23514, 22506, 19734, 12870]