cp's OEIS Frontend

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.

A264490 T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0.

Table of values

n a(n)
1 1
2 1
3 3
4 1
5 1
6 4
7 1
8 10
9 12
10 12
11 1
12 8
13 36
14 16
15 25
16 1
17 35
18 108
19 212
20 214
21 52
22 1
23 42
24 324
25 788
26 2144
27 324
28 121
29 1
30 130
31 972
32 4772
33 21466
34 9714
35 2960
36 261
37 1
38 194
39 2916
40 23076
41 217049
42 142352
43 92052
44 6442
45 576
46 1
47 501
48 8748
49 122628
50 2186741
51 2517024
52 2870927
53 581575

List of values

[1, 1, 3, 1, 1, 4, 1, 10, 12, 12, 1, 8, 36, 16, 25, 1, 35, 108, 212, 214, 52, 1, 42, 324, 788, 2144, 324, 121, 1, 130, 972, 4772, 21466, 9714, 2960, 261, 1, 194, 2916, 23076, 217049, 142352, 92052, 6442, 576, 1, 501, 8748, 122628, 2186741, 2517024, 2870927, 581575]