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.

A198914 T(n,k) = number of n X k 0..7 arrays with values 0..7 introduced in row major order and no element equal to any horizontal or vertical neighbor.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 4
6 2
7 5
8 34
9 34
10 5
11 15
12 500
13 2051
14 500
15 15
16 52
17 10867
18 269940
19 269940
20 10867
21 52
22 203
23 313132
24 54381563
25 319608038
26 54381563
27 313132
28 203
29 877
30 10856948
31 13088156547
32 481871809749
33 481871809749
34 13088156547
35 10856948
36 877
37 4139

List of values

[1, 1, 1, 2, 4, 2, 5, 34, 34, 5, 15, 500, 2051, 500, 15, 52, 10867, 269940, 269940, 10867, 52, 203, 313132, 54381563, 319608038, 54381563, 313132, 203, 877, 10856948, 13088156547, 481871809749, 481871809749, 13088156547, 10856948, 877, 4139]