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.

A252983 T(n,k)=Number of nXk nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value increasing by 0 or 1 with every step right, diagonally se or down.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 0
6 1
7 3
8 1
9 1
10 3
11 6
12 13
13 1
14 13
15 6
16 10
17 41
18 33
19 33
20 41
21 10
22 15
23 85
24 266
25 68
26 266
27 85
28 15
29 21
30 145
31 851
32 1247
33 1247
34 851
35 145
36 21
37 28
38 221
39 1836
40 8487
41 4657
42 8487
43 1836
44 221
45 28
46 36
47 313
48 3221
49 27905
50 67537
51 67537
52 27905
53 3221
54 313
55 36
56 45
57 421
58 5006
59 62977

List of values

[0, 0, 0, 1, 0, 1, 3, 1, 1, 3, 6, 13, 1, 13, 6, 10, 41, 33, 33, 41, 10, 15, 85, 266, 68, 266, 85, 15, 21, 145, 851, 1247, 1247, 851, 145, 21, 28, 221, 1836, 8487, 4657, 8487, 1836, 221, 28, 36, 313, 3221, 27905, 67537, 67537, 27905, 3221, 313, 36, 45, 421, 5006, 62977]