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.

A263873 T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with each row and column divisible by 3, read as a binary number with top and left being the most significant bits, and rows and columns lexicographically nondecreasing.

Table of values

n a(n)
1 2
2 2
3 2
4 3
5 2
6 3
7 3
8 3
9 3
10 3
11 4
12 3
13 7
14 3
15 4
16 4
17 4
18 7
19 7
20 4
21 4
22 5
23 4
24 14
25 7
26 14
27 4
28 5
29 5
30 5
31 14
32 16
33 16
34 14
35 5
36 5
37 6
38 5
39 25
40 17
41 61
42 17
43 25
44 5
45 6
46 6
47 6
48 25
49 41
50 93
51 93
52 41
53 25
54 6
55 6
56 7
57 6
58 41
59 48
60 494
61 379
62 494
63 48
64 41
65 6
66 7
67 7
68 7
69 41
70 113
71 975
72 2909
73 2909
74 975
75 113
76 41
77 7
78 7
79 8
80 7
81 63
82 141

List of values

[2, 2, 2, 3, 2, 3, 3, 3, 3, 3, 4, 3, 7, 3, 4, 4, 4, 7, 7, 4, 4, 5, 4, 14, 7, 14, 4, 5, 5, 5, 14, 16, 16, 14, 5, 5, 6, 5, 25, 17, 61, 17, 25, 5, 6, 6, 6, 25, 41, 93, 93, 41, 25, 6, 6, 7, 6, 41, 48, 494, 379, 494, 48, 41, 6, 7, 7, 7, 41, 113, 975, 2909, 2909, 975, 113, 41, 7, 7, 8, 7, 63, 141]