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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.

A046598 First numerator and then denominator of each element of the 1/4-Pascal triangle (by row), excluding 1's and 2's.

Table of values

n a(n)
1 4
2 5
3 4
4 5
5 4
6 9
7 4
8 5
9 9
10 4
11 13
12 4
13 19
14 4
15 19
16 4
17 13
18 4
19 17
20 4
21 8
22 19
23 8
24 17
25 4
26 21
27 4
28 49
29 4
30 35
31 35
32 49
33 4
34 21
35 4
36 25
37 4
38 35
39 119
40 4
41 35
42 119
43 4
44 35
45 25
46 4
47 29
48 4
49 95
50 4
51 189
52 4
53 259
54 4
55 259
56 4
57 189
58 4
59 95
60 4
61 29
62 4
63 33
64 4
65 31
66 71
67 112
68 259
69 112
70 71
71 31
72 33
73 4
74 37
75 4
76 157
77 4
78 102

List of values

[4, 5, 4, 5, 4, 9, 4, 5, 9, 4, 13, 4, 19, 4, 19, 4, 13, 4, 17, 4, 8, 19, 8, 17, 4, 21, 4, 49, 4, 35, 35, 49, 4, 21, 4, 25, 4, 35, 119, 4, 35, 119, 4, 35, 25, 4, 29, 4, 95, 4, 189, 4, 259, 4, 259, 4, 189, 4, 95, 4, 29, 4, 33, 4, 31, 71, 112, 259, 112, 71, 31, 33, 4, 37, 4, 157, 4, 102]

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