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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.

A182702 Triangle T(n,k) = n*(A000041(n-k)) read by rows, k>=0.

Table of values

n a(n)
1 1
2 4
3 2
4 9
5 6
6 3
7 20
8 12
9 8
10 4
11 35
12 25
13 15
14 10
15 5
16 66
17 42
18 30
19 18
20 12
21 6
22 105
23 77
24 49
25 35
26 21
27 14
28 7
29 176
30 120
31 88
32 56
33 40
34 24
35 16
36 8
37 270
38 198
39 135
40 99
41 63
42 45
43 27
44 18
45 9
46 420
47 300
48 220
49 150
50 110
51 70
52 50
53 30
54 20
55 10
56 616
57 462
58 330
59 242
60 165
61 121
62 77
63 55
64 33
65 22
66 11

List of values

[1, 4, 2, 9, 6, 3, 20, 12, 8, 4, 35, 25, 15, 10, 5, 66, 42, 30, 18, 12, 6, 105, 77, 49, 35, 21, 14, 7, 176, 120, 88, 56, 40, 24, 16, 8, 270, 198, 135, 99, 63, 45, 27, 18, 9, 420, 300, 220, 150, 110, 70, 50, 30, 20, 10, 616, 462, 330, 242, 165, 121, 77, 55, 33, 22, 11]

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

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