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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.

A209900 Floor of the expected number of occupied cells in a random placement of 2n balls into n cells.

Table of values

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

List of values

[1, 1, 2, 3, 4, 5, 6, 7, 7, 8, 9, 10, 11, 12, 13, 13, 14, 15, 16, 17, 18, 19, 20, 20, 21, 22, 23, 24, 25, 26, 26, 27, 28, 29, 30, 31, 32, 32, 33, 34, 35, 36, 37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 45, 46, 47, 48, 49, 50, 51, 52, 52, 53, 54, 55, 56, 57, 58, 58]

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

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