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.

A301951 T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 0
2 1
3 0
4 1
5 2
6 0
7 2
8 5
9 5
10 0
11 3
12 16
13 20
14 13
15 0
16 5
17 52
18 123
19 83
20 34
21 0
22 8
23 169
24 680
25 947
26 342
27 89
28 0
29 13
30 549
31 4070
32 9084
33 7326
34 1411
35 233
36 0
37 21
38 1784
39 23565
40 98839
41 120815
42 56710
43 5820
44 610
45 0
46 34
47 5797
48 138014
49 1029960
50 2406169
51 1608681
52 439078
53 24007
54 1597
55 0

List of values

[0, 1, 0, 1, 2, 0, 2, 5, 5, 0, 3, 16, 20, 13, 0, 5, 52, 123, 83, 34, 0, 8, 169, 680, 947, 342, 89, 0, 13, 549, 4070, 9084, 7326, 1411, 233, 0, 21, 1784, 23565, 98839, 120815, 56710, 5820, 610, 0, 34, 5797, 138014, 1029960, 2406169, 1608681, 439078, 24007, 1597, 0]