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.

A122851 Number triangle T(n,k) = C(k,n-k)*(n-k)!.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 1
6 0
7 0
8 2
9 1
10 0
11 0
12 2
13 3
14 1
15 0
16 0
17 0
18 6
19 4
20 1
21 0
22 0
23 0
24 6
25 12
26 5
27 1
28 0
29 0
30 0
31 0
32 24
33 20
34 6
35 1
36 0
37 0
38 0
39 0
40 24
41 60
42 30
43 7
44 1
45 0
46 0
47 0
48 0
49 0
50 120
51 120
52 42
53 8
54 1
55 0
56 0
57 0
58 0
59 0
60 120
61 360
62 210
63 56
64 9
65 1
66 0
67 0
68 0
69 0
70 0
71 0
72 720
73 840
74 336
75 72
76 10
77 1

List of values

[1, 0, 1, 0, 1, 1, 0, 0, 2, 1, 0, 0, 2, 3, 1, 0, 0, 0, 6, 4, 1, 0, 0, 0, 6, 12, 5, 1, 0, 0, 0, 0, 24, 20, 6, 1, 0, 0, 0, 0, 24, 60, 30, 7, 1, 0, 0, 0, 0, 0, 120, 120, 42, 8, 1, 0, 0, 0, 0, 0, 120, 360, 210, 56, 9, 1, 0, 0, 0, 0, 0, 0, 720, 840, 336, 72, 10, 1]