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.

A196856 T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,1,0,2,4 for x=0,1,2,3,4.

Table of values

n a(n)
1 1
2 2
3 2
4 4
5 11
6 4
7 6
8 38
9 38
10 6
11 12
12 136
13 206
14 136
15 12
16 22
17 496
18 1370
19 1370
20 496
21 22
22 40
23 1792
24 8767
25 16876
26 8767
27 1792
28 40
29 74
30 6440
31 56470
32 199125
33 199125
34 56470
35 6440
36 74
37 136
38 23306
39 363685
40 2369631
41 4326720
42 2369631
43 363685
44 23306
45 136
46 250
47 84180

List of values

[1, 2, 2, 4, 11, 4, 6, 38, 38, 6, 12, 136, 206, 136, 12, 22, 496, 1370, 1370, 496, 22, 40, 1792, 8767, 16876, 8767, 1792, 40, 74, 6440, 56470, 199125, 199125, 56470, 6440, 74, 136, 23306, 363685, 2369631, 4326720, 2369631, 363685, 23306, 136, 250, 84180]