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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.

A181196 T(n,k) = number of n X k matrices containing a permutation of 1..n*k in increasing order rowwise, columnwise, diagonally and (downwards) antidiagonally.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 2
9 1
10 1
11 1
12 5
13 4
14 1
15 1
16 1
17 14
18 29
19 8
20 1
21 1
22 1
23 42
24 290
25 169
26 16
27 1
28 1
29 1
30 132
31 3532
32 6392
33 985
34 32
35 1
36 1
37 1
38 429
39 49100
40 352184
41 141696
42 5741
43 64
44 1
45 1
46 1
47 1430
48 750325
49 25097600
50 36372976
51 3142704
52 33461
53 128
54 1
55 1
56 1
57 4862
58 12310294

List of values

[1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 5, 4, 1, 1, 1, 14, 29, 8, 1, 1, 1, 42, 290, 169, 16, 1, 1, 1, 132, 3532, 6392, 985, 32, 1, 1, 1, 429, 49100, 352184, 141696, 5741, 64, 1, 1, 1, 1430, 750325, 25097600, 36372976, 3142704, 33461, 128, 1, 1, 1, 4862, 12310294]