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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.

A121857 a(n) = ceiling(e*sqrt(n)).

Table of values

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

List of values

[0, 3, 4, 5, 6, 7, 7, 8, 8, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 24]

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

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