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.

A046218 Numerators of elements of 1/2-Pascal triangle (by row).

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 3
9 3
10 1
11 1
12 5
13 3
14 5
15 1
16 1
17 7
18 11
19 11
20 7
21 1
22 1
23 9
24 9
25 11
26 9
27 9
28 1
29 1
30 11
31 27
32 20
33 20
34 27
35 11
36 1
37 1
38 13
39 19
40 67
41 40
42 67
43 19
44 13
45 1
46 1
47 15
48 51
49 105
50 147
51 147
52 105
53 51
54 15
55 1
56 1
57 17
58 33
59 78
60 126
61 147
62 126
63 78
64 33
65 17
66 1
67 1
68 19
69 83
70 111
71 204

List of values

[1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 5, 3, 5, 1, 1, 7, 11, 11, 7, 1, 1, 9, 9, 11, 9, 9, 1, 1, 11, 27, 20, 20, 27, 11, 1, 1, 13, 19, 67, 40, 67, 19, 13, 1, 1, 15, 51, 105, 147, 147, 105, 51, 15, 1, 1, 17, 33, 78, 126, 147, 126, 78, 33, 17, 1, 1, 19, 83, 111, 204]

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

Content is available under The OEIS End-User License Agreement.