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.

A071521 Number of 3-smooth numbers <= n.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 4
6 5
7 5
8 6
9 7
10 7
11 7
12 8
13 8
14 8
15 8
16 9
17 9
18 10
19 10
20 10
21 10
22 10
23 10
24 11
25 11
26 11
27 12
28 12
29 12
30 12
31 12
32 13
33 13
34 13
35 13
36 14
37 14
38 14
39 14
40 14
41 14
42 14
43 14
44 14
45 14
46 14
47 14
48 15
49 15
50 15
51 15
52 15
53 15
54 16
55 16
56 16
57 16
58 16
59 16
60 16
61 16
62 16
63 16
64 17
65 17
66 17
67 17
68 17
69 17
70 17
71 17
72 18
73 18
74 18
75 18

List of values

[1, 2, 3, 4, 4, 5, 5, 6, 7, 7, 7, 8, 8, 8, 8, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18]

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

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