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.

A252938 T(n,k)=Number of nXk nonnegative integer arrays with upper left 0 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.

Table of values

n a(n)
1 1
2 2
3 2
4 4
5 5
6 4
7 8
8 13
9 13
10 8
11 15
12 34
13 44
14 34
15 15
16 26
17 83
18 153
19 153
20 83
21 26
22 42
23 176
24 494
25 711
26 494
27 176
28 42
29 64
30 329
31 1343
32 3067
33 3067
34 1343
35 329
36 64
37 93
38 558
39 3016
40 10920
41 17962
42 10920
43 3016
44 558
45 93
46 130
47 879
48 5833
49 30818
50 86488
51 86488
52 30818
53 5833
54 879
55 130
56 176

List of values

[1, 2, 2, 4, 5, 4, 8, 13, 13, 8, 15, 34, 44, 34, 15, 26, 83, 153, 153, 83, 26, 42, 176, 494, 711, 494, 176, 42, 64, 329, 1343, 3067, 3067, 1343, 329, 64, 93, 558, 3016, 10920, 17962, 10920, 3016, 558, 93, 130, 879, 5833, 30818, 86488, 86488, 30818, 5833, 879, 130, 176]