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.

A239340 T(n,k)=Number of nXk 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it, modulo 4.

Table of values

n a(n)
1 2
2 5
3 5
4 12
5 31
6 12
7 28
8 172
9 172
10 28
11 66
12 926
13 2187
14 926
15 66
16 156
17 5078
18 27341
19 27341
20 5078
21 156
22 368
23 27861
24 346028
25 790681
26 346028
27 27861
28 368
29 868
30 152260
31 4360887
32 22952323
33 22952323
34 4360887
35 152260
36 868
37 2048
38 832207
39 54774178
40 663249556

List of values

[2, 5, 5, 12, 31, 12, 28, 172, 172, 28, 66, 926, 2187, 926, 66, 156, 5078, 27341, 27341, 5078, 156, 368, 27861, 346028, 790681, 346028, 27861, 368, 868, 152260, 4360887, 22952323, 22952323, 4360887, 152260, 868, 2048, 832207, 54774178, 663249556]