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.

A143237 Triangle read by rows, T(n, k) = A000203(n)*A000203(k), for n >= 1, 1 <= k <= n.

Table of values

n a(n)
1 1
2 3
3 9
4 4
5 12
6 16
7 7
8 21
9 28
10 49
11 6
12 18
13 24
14 42
15 36
16 12
17 36
18 48
19 84
20 72
21 144
22 8
23 24
24 32
25 56
26 48
27 96
28 64
29 15
30 45
31 60
32 105
33 90
34 180
35 120
36 225
37 13
38 39
39 52
40 91
41 78
42 156
43 104
44 195
45 169
46 18
47 54
48 72
49 126
50 108
51 216
52 144
53 270
54 234
55 324
56 12
57 36
58 48
59 84
60 72
61 144
62 96
63 180
64 156
65 216
66 144

List of values

[1, 3, 9, 4, 12, 16, 7, 21, 28, 49, 6, 18, 24, 42, 36, 12, 36, 48, 84, 72, 144, 8, 24, 32, 56, 48, 96, 64, 15, 45, 60, 105, 90, 180, 120, 225, 13, 39, 52, 91, 78, 156, 104, 195, 169, 18, 54, 72, 126, 108, 216, 144, 270, 234, 324, 12, 36, 48, 84, 72, 144, 96, 180, 156, 216, 144]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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