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.

A302309 T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 1
2 2
3 2
4 3
5 3
6 4
7 5
8 11
9 6
10 8
11 8
12 21
13 13
14 10
15 16
16 13
17 31
18 26
19 33
20 21
21 32
22 21
23 113
24 48
25 66
26 58
27 42
28 64
29 34
30 363
31 121
32 194
33 153
34 153
35 86
36 128
37 55
38 813
39 275
40 663
41 445
42 380
43 336
44 179
45 256
46 89
47 1751
48 600
49 2048
50 1595
51 1271
52 1090
53 937
54 370
55 512
56 144
57 5001
58 1296
59 5790
60 4772
61 5715

List of values

[1, 2, 2, 3, 3, 4, 5, 11, 6, 8, 8, 21, 13, 10, 16, 13, 31, 26, 33, 21, 32, 21, 113, 48, 66, 58, 42, 64, 34, 363, 121, 194, 153, 153, 86, 128, 55, 813, 275, 663, 445, 380, 336, 179, 256, 89, 1751, 600, 2048, 1595, 1271, 1090, 937, 370, 512, 144, 5001, 1296, 5790, 4772, 5715]