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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.

A046565 First numerator and then denominator of each element of the 1/4-Pascal triangle (by row), excluding 1's.

Table of values

n a(n)
1 4
2 5
3 4
4 5
5 4
6 9
7 4
8 5
9 2
10 9
11 4
12 13
13 4
14 19
15 4
16 19
17 4
18 13
19 4
20 17
21 4
22 8
23 19
24 2
25 8
26 17
27 4
28 21
29 4
30 49
31 4
32 35
33 2
34 35
35 2
36 49
37 4
38 21
39 4
40 25
41 4
42 35
43 2
44 119
45 4
46 35
47 119
48 4
49 35
50 2
51 25
52 4
53 29
54 4
55 95
56 4
57 189
58 4
59 259
60 4
61 259
62 4
63 189
64 4
65 95
66 4
67 29
68 4
69 33
70 4
71 31
72 71
73 112

List of values

[4, 5, 4, 5, 4, 9, 4, 5, 2, 9, 4, 13, 4, 19, 4, 19, 4, 13, 4, 17, 4, 8, 19, 2, 8, 17, 4, 21, 4, 49, 4, 35, 2, 35, 2, 49, 4, 21, 4, 25, 4, 35, 2, 119, 4, 35, 119, 4, 35, 2, 25, 4, 29, 4, 95, 4, 189, 4, 259, 4, 259, 4, 189, 4, 95, 4, 29, 4, 33, 4, 31, 71, 112]

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

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