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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.

A264059 T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having index change +-(.,.) 0,0 1,2 or 2,-2.

Table of values

n a(n)
1 1
2 2
3 1
4 4
5 8
6 1
7 8
8 64
9 18
10 1
11 16
12 216
13 324
14 45
15 1
16 32
17 729
18 2592
19 2025
20 125
21 1
22 64
23 3375
24 20736
25 32400
26 15625
27 320
28 1
29 128
30 15625
31 207360
32 518400
33 450000
34 102400
35 832
36 1
37 256
38 64000
39 2073600
40 11151360
41 12960000
42 5760000
43 692224
44 2197
45 1
46 512
47 262144

List of values

[1, 2, 1, 4, 8, 1, 8, 64, 18, 1, 16, 216, 324, 45, 1, 32, 729, 2592, 2025, 125, 1, 64, 3375, 20736, 32400, 15625, 320, 1, 128, 15625, 207360, 518400, 450000, 102400, 832, 1, 256, 64000, 2073600, 11151360, 12960000, 5760000, 692224, 2197, 1, 512, 262144]