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.

A196950 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 4,1,0,2,3 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
13 210
14 136
15 12
16 22
17 496
18 1416
19 1416
20 496
21 22
22 40
23 1792
24 9199
25 18060
26 9199
27 1792
28 40
29 74
30 6440
31 60206
32 220433
33 220433
34 60206
35 6440
36 74
37 136
38 23306
39 393585
40 2711711
41 5039158
42 2711711
43 393585
44 23306
45 136
46 250
47 84180

List of values

[1, 2, 2, 4, 11, 4, 6, 38, 38, 6, 12, 136, 210, 136, 12, 22, 496, 1416, 1416, 496, 22, 40, 1792, 9199, 18060, 9199, 1792, 40, 74, 6440, 60206, 220433, 220433, 60206, 6440, 74, 136, 23306, 393585, 2711711, 5039158, 2711711, 393585, 23306, 136, 250, 84180]