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.

A318191 Number A(n,k) of lattice paths from {n}^k to {0}^k using steps that decrement one component by 1 such that for each point p we have abs(p_{i}-p_{(i mod k)+1}) <= 1 and the first component used is p_1; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
10 1
11 2
12 2
13 1
14 1
15 1
16 6
17 12
18 4
19 1
20 1
21 1
22 24
23 180
24 72
25 8
26 1
27 1
28 1
29 120
30 4680
31 5400
32 432
33 16
34 1
35 1
36 1
37 720
38 187200
39 914400
40 162000
41 2592
42 32
43 1
44 1
45 1
46 5040
47 10634400
48 296438400
49 178660800
50 4860000
51 15552
52 64
53 1
54 1
55 1
56 40320
57 813664800
58 162273628800
59 469551168000
60 34907788800
61 145800000
62 93312
63 128
64 1
65 1

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 6, 12, 4, 1, 1, 1, 24, 180, 72, 8, 1, 1, 1, 120, 4680, 5400, 432, 16, 1, 1, 1, 720, 187200, 914400, 162000, 2592, 32, 1, 1, 1, 5040, 10634400, 296438400, 178660800, 4860000, 15552, 64, 1, 1, 1, 40320, 813664800, 162273628800, 469551168000, 34907788800, 145800000, 93312, 128, 1, 1]