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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.

A111470 Irregular table read by rows: the n-th row gives all the numbers with the prime signature of n using only prime divisors of n.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 18
14 13
15 14
16 15
17 16
18 17
19 18
20 12
21 19
22 20
23 50
24 21
25 22
26 23
27 24
28 54
29 25
30 26
31 27
32 28
33 98
34 29
35 30
36 31
37 32
38 33
39 34
40 35
41 36
42 37
43 38
44 39
45 40
46 250
47 41
48 42
49 43
50 44
51 242
52 45
53 75
54 46
55 47
56 48
57 162
58 49
59 20
60 50
61 51
62 52
63 338
64 53
65 24
66 54
67 55

List of values

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 18, 13, 14, 15, 16, 17, 18, 12, 19, 20, 50, 21, 22, 23, 24, 54, 25, 26, 27, 28, 98, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 250, 41, 42, 43, 44, 242, 45, 75, 46, 47, 48, 162, 49, 20, 50, 51, 52, 338, 53, 24, 54, 55]

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

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