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.

A233155 T(n,k) = Number of n X k 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally or antidiagonally.

Table of values

n a(n)
1 3
2 6
3 9
4 12
5 24
6 27
7 24
8 72
9 96
10 81
11 48
12 216
13 432
14 384
15 243
16 96
17 648
18 1944
19 2592
20 1536
21 729
22 192
23 1944
24 8856
25 17496
26 15552
27 6144
28 2187
29 384
30 5832
31 40392
32 121176
33 157464
34 93312
35 24576
36 6561
37 768
38 17496
39 184248
40 842616
41 1658232
42 1417176
43 559872
44 98304
45 19683

List of values

[3, 6, 9, 12, 24, 27, 24, 72, 96, 81, 48, 216, 432, 384, 243, 96, 648, 1944, 2592, 1536, 729, 192, 1944, 8856, 17496, 15552, 6144, 2187, 384, 5832, 40392, 121176, 157464, 93312, 24576, 6561, 768, 17496, 184248, 842616, 1658232, 1417176, 559872, 98304, 19683]