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.

A208118 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.

Table of values

n a(n)
1 2
2 4
3 4
4 6
5 16
6 6
7 9
8 36
9 36
10 9
11 15
12 81
13 90
14 81
15 12
16 25
17 225
18 225
19 225
20 144
21 16
22 40
23 625
24 825
25 625
26 420
27 256
28 20
29 64
30 1600
31 3025
32 3025
33 1225
34 784
35 400
36 25
37 104
38 4096
39 9240
40 14641
41 7315
42 2401
43 1260
44 625
45 30
46 169
47 10816
48 28224
49 53361
50 43681
51 17689
52 3969
53 2025
54 900

List of values

[2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 15, 81, 90, 81, 12, 25, 225, 225, 225, 144, 16, 40, 625, 825, 625, 420, 256, 20, 64, 1600, 3025, 3025, 1225, 784, 400, 25, 104, 4096, 9240, 14641, 7315, 2401, 1260, 625, 30, 169, 10816, 28224, 53361, 43681, 17689, 3969, 2025, 900]