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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.

A151969 a(n) = smallest integer >= n which has only prime factors 2 and 5.

Table of values

n a(n)
1 1
2 2
3 4
4 4
5 5
6 8
7 8
8 8
9 10
10 10
11 16
12 16
13 16
14 16
15 16
16 16
17 20
18 20
19 20
20 20
21 25
22 25
23 25
24 25
25 25
26 32
27 32
28 32
29 32
30 32
31 32
32 32
33 40
34 40
35 40
36 40
37 40
38 40
39 40
40 40
41 50
42 50
43 50
44 50
45 50
46 50
47 50
48 50
49 50
50 50
51 64
52 64
53 64
54 64
55 64
56 64
57 64
58 64
59 64
60 64
61 64
62 64
63 64
64 64
65 80
66 80
67 80
68 80
69 80

List of values

[1, 2, 4, 4, 5, 8, 8, 8, 10, 10, 16, 16, 16, 16, 16, 16, 20, 20, 20, 20, 25, 25, 25, 25, 25, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 80, 80, 80, 80, 80]

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

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