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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.

A104712 Pascal's triangle, with the first two columns removed.

Table of values

n a(n)
2 1
3 3
4 1
5 6
6 4
7 1
8 10
9 10
10 5
11 1
12 15
13 20
14 15
15 6
16 1
17 21
18 35
19 35
20 21
21 7
22 1
23 28
24 56
25 70
26 56
27 28
28 8
29 1
30 36
31 84
32 126
33 126
34 84
35 36
36 9
37 1
38 45
39 120
40 210
41 252
42 210
43 120
44 45
45 10
46 1
47 55
48 165
49 330
50 462
51 462
52 330
53 165
54 55
55 11
56 1
57 66
58 220
59 495
60 792
61 924
62 792
63 495
64 220
65 66
66 12
67 1
68 78
69 286
70 715

List of values

[1, 3, 1, 6, 4, 1, 10, 10, 5, 1, 15, 20, 15, 6, 1, 21, 35, 35, 21, 7, 1, 28, 56, 70, 56, 28, 8, 1, 36, 84, 126, 126, 84, 36, 9, 1, 45, 120, 210, 252, 210, 120, 45, 10, 1, 55, 165, 330, 462, 462, 330, 165, 55, 11, 1, 66, 220, 495, 792, 924, 792, 495, 220, 66, 12, 1, 78, 286, 715]

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

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