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.

A206389 T(n,k)=Number of nXk 0..6 arrays with no element equal to another within a city block distance of two, and new values 0..6 introduced in row major order.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 2
8 4
9 4
10 2
11 5
12 33
13 55
14 33
15 5
16 15
17 380
18 1368
19 1368
20 380
21 15
22 52
23 4801
24 34442
25 67716
26 34442
27 4801
28 52
29 202
30 62004
31 868994
32 3328979
33 3328979
34 868994
35 62004
36 202
37 855
38 804833
39 21916090
40 164270604
41 319902496
42 164270604
43 21916090
44 804833
45 855

List of values

[1, 1, 1, 1, 1, 1, 2, 4, 4, 2, 5, 33, 55, 33, 5, 15, 380, 1368, 1368, 380, 15, 52, 4801, 34442, 67716, 34442, 4801, 52, 202, 62004, 868994, 3328979, 3328979, 868994, 62004, 202, 855, 804833, 21916090, 164270604, 319902496, 164270604, 21916090, 804833, 855]