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.

A301541 T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1 or 3 horizontally or vertically adjacent elements, with upper left element zero.

Table of values

n a(n)
1 1
2 2
3 2
4 3
5 3
6 3
7 5
8 6
9 6
10 5
11 8
12 10
13 9
14 10
15 8
16 13
17 21
18 26
19 26
20 21
21 13
22 21
23 42
24 61
25 79
26 61
27 42
28 21
29 34
30 86
31 154
32 212
33 212
34 154
35 86
36 34
37 55
38 179
39 374
40 603
41 658
42 603
43 374
44 179
45 55
46 89
47 370
48 941
49 1841
50 2417
51 2417
52 1841
53 941
54 370
55 89
56 144
57 770
58 2357
59 5663
60 9037
61 10783
62 9037

List of values

[1, 2, 2, 3, 3, 3, 5, 6, 6, 5, 8, 10, 9, 10, 8, 13, 21, 26, 26, 21, 13, 21, 42, 61, 79, 61, 42, 21, 34, 86, 154, 212, 212, 154, 86, 34, 55, 179, 374, 603, 658, 603, 374, 179, 55, 89, 370, 941, 1841, 2417, 2417, 1841, 941, 370, 89, 144, 770, 2357, 5663, 9037, 10783, 9037]