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.

A046227 First numerator and then denominator of elements to right of central elements of 1/2-Pascal triangle (by row), excluding 1's.

Table of values

n a(n)
1 3
2 2
3 5
4 2
5 11
6 2
7 7
8 2
9 9
10 9
11 2
12 20
13 27
14 2
15 11
16 2
17 67
18 2
19 19
20 13
21 2
22 147
23 2
24 105
25 2
26 51
27 2
28 15
29 2
30 126
31 78
32 33
33 17
34 2
35 273
36 204
37 111
38 83
39 2
40 19
41 2
42 477
43 315
44 305
45 2
46 51
47 21
48 2
49 1023
50 792
51 935
52 2
53 407
54 2
55 123
56 2
57 23
58 2
59 1815
60 2519
61 2
62 671
63 265
64 73
65 25
66 2
67 3861

List of values

[3, 2, 5, 2, 11, 2, 7, 2, 9, 9, 2, 20, 27, 2, 11, 2, 67, 2, 19, 13, 2, 147, 2, 105, 2, 51, 2, 15, 2, 126, 78, 33, 17, 2, 273, 204, 111, 83, 2, 19, 2, 477, 315, 305, 2, 51, 21, 2, 1023, 792, 935, 2, 407, 2, 123, 2, 23, 2, 1815, 2519, 2, 671, 265, 73, 25, 2, 3861]