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.

A239819 T(n,k)=Number of nXk 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it, modulo 4.

Table of values

n a(n)
1 2
2 4
3 5
4 10
5 23
6 11
7 24
8 132
9 113
10 25
11 56
12 729
13 1480
14 582
15 57
16 132
17 3951
18 18728
19 17552
20 2981
21 129
22 312
23 21602
24 232272
25 510748
26 204779
27 15266
28 293
29 736
30 118253
31 2912793
32 14544801
33 13597573
34 2405330
35 78188
36 665
37 1736
38 646306
39 36627126
40 418324402

List of values

[2, 4, 5, 10, 23, 11, 24, 132, 113, 25, 56, 729, 1480, 582, 57, 132, 3951, 18728, 17552, 2981, 129, 312, 21602, 232272, 510748, 204779, 15266, 293, 736, 118253, 2912793, 14544801, 13597573, 2405330, 78188, 665, 1736, 646306, 36627126, 418324402]