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.

A047922 Triangle of numbers a(n,k) = number of terms in n X n determinant with 2 adjacent diagonals of k and k-1 0's (0<=k<=n).

Table of values

n a(n)
0 1
1 1
2 0
3 2
4 1
5 0
6 6
7 4
8 1
9 1
10 24
11 18
12 8
13 5
14 3
15 120
16 96
17 54
18 34
19 23
20 16
21 720
22 600
23 384
24 258
25 182
26 131
27 96
28 5040
29 4320
30 3000
31 2136
32 1566
33 1168
34 883
35 675
36 40320
37 35280
38 25920
39 19320
40 14664
41 11274
42 8756
43 6859
44 5413
45 362880
46 322560
47 246960
48 190800
49 149160
50 117696
51 93582
52 74902
53 60301
54 48800

List of values

[1, 1, 0, 2, 1, 0, 6, 4, 1, 1, 24, 18, 8, 5, 3, 120, 96, 54, 34, 23, 16, 720, 600, 384, 258, 182, 131, 96, 5040, 4320, 3000, 2136, 1566, 1168, 883, 675, 40320, 35280, 25920, 19320, 14664, 11274, 8756, 6859, 5413, 362880, 322560, 246960, 190800, 149160, 117696, 93582, 74902, 60301, 48800]