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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.

A082481 Number of 1's in binary representation of C(2n,n).

Table of values

n a(n)
0 1
1 1
2 2
3 2
4 3
5 6
6 6
7 6
8 6
9 11
10 9
11 9
12 9
13 13
14 10
15 16
16 14
17 10
18 16
19 20
20 14
21 20
22 16
23 29
24 26
25 24
26 22
27 30
28 24
29 20
30 25
31 25
32 30
33 29
34 33
35 37
36 35
37 40
38 35
39 39
40 37
41 40
42 42
43 43
44 36
45 44
46 46
47 48
48 48
49 41
50 43
51 46
52 50
53 58
54 51
55 52
56 52
57 50
58 53
59 56
60 54
61 48
62 59
63 60
64 57
65 64
66 61
67 61
68 64
69 66
70 64
71 72
72 73

List of values

[1, 1, 2, 2, 3, 6, 6, 6, 6, 11, 9, 9, 9, 13, 10, 16, 14, 10, 16, 20, 14, 20, 16, 29, 26, 24, 22, 30, 24, 20, 25, 25, 30, 29, 33, 37, 35, 40, 35, 39, 37, 40, 42, 43, 36, 44, 46, 48, 48, 41, 43, 46, 50, 58, 51, 52, 52, 50, 53, 56, 54, 48, 59, 60, 57, 64, 61, 61, 64, 66, 64, 72, 73]

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

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