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.

A129439 An analog of Pascal's triangle: T(n,k) = A092143(n)/(A092143(n-k)*A092143(k)), 0 <= k <= n.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 1
7 3
8 3
9 1
10 1
11 8
12 12
13 8
14 1
15 1
16 5
17 20
18 20
19 5
20 1
21 1
22 36
23 90
24 240
25 90
26 36
27 1
28 1
29 7
30 126
31 210
32 210
33 126
34 7
35 1
36 1
37 64
38 224
39 2688
40 1680
41 2688
42 224
43 64
44 1
45 1
46 27
47 864
48 2016
49 9072
50 9072
51 2016
52 864
53 27
54 1
55 1
56 100
57 1350
58 28800
59 25200
60 181440
61 25200
62 28800
63 1350
64 100
65 1

List of values

[1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 8, 12, 8, 1, 1, 5, 20, 20, 5, 1, 1, 36, 90, 240, 90, 36, 1, 1, 7, 126, 210, 210, 126, 7, 1, 1, 64, 224, 2688, 1680, 2688, 224, 64, 1, 1, 27, 864, 2016, 9072, 9072, 2016, 864, 27, 1, 1, 100, 1350, 28800, 25200, 181440, 25200, 28800, 1350, 100, 1]