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.

A085133 Numbers k such that k and its digit reversal are both 7-smooth (A002473).

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 12
12 18
13 20
14 21
15 24
16 27
17 30
18 36
19 40
20 42
21 45
22 48
23 50
24 54
25 60
26 63
27 70
28 72
29 80
30 81
31 84
32 90
33 100
34 120
35 144
36 180
37 200
38 210
39 240
40 252
41 270
42 288
43 300
44 343
45 360
46 400
47 405
48 420
49 441
50 450
51 480
52 500
53 504
54 525
55 540
56 576
57 600
58 630
59 675
60 686
61 700
62 720

List of values

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 18, 20, 21, 24, 27, 30, 36, 40, 42, 45, 48, 50, 54, 60, 63, 70, 72, 80, 81, 84, 90, 100, 120, 144, 180, 200, 210, 240, 252, 270, 288, 300, 343, 360, 400, 405, 420, 441, 450, 480, 500, 504, 525, 540, 576, 600, 630, 675, 686, 700, 720]

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

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