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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.

A306286 a(n) is the product of the positions of the ones in the binary expansion of n (the most significant bit having position 1).

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 1
5 3
6 2
7 6
8 1
9 4
10 3
11 12
12 2
13 8
14 6
15 24
16 1
17 5
18 4
19 20
20 3
21 15
22 12
23 60
24 2
25 10
26 8
27 40
28 6
29 30
30 24
31 120
32 1
33 6
34 5
35 30
36 4
37 24
38 20
39 120
40 3
41 18
42 15
43 90
44 12
45 72
46 60
47 360
48 2
49 12
50 10
51 60
52 8
53 48
54 40
55 240
56 6
57 36
58 30
59 180
60 24
61 144
62 120
63 720
64 1
65 7
66 6
67 42
68 5
69 35
70 30

List of values

[1, 1, 1, 2, 1, 3, 2, 6, 1, 4, 3, 12, 2, 8, 6, 24, 1, 5, 4, 20, 3, 15, 12, 60, 2, 10, 8, 40, 6, 30, 24, 120, 1, 6, 5, 30, 4, 24, 20, 120, 3, 18, 15, 90, 12, 72, 60, 360, 2, 12, 10, 60, 8, 48, 40, 240, 6, 36, 30, 180, 24, 144, 120, 720, 1, 7, 6, 42, 5, 35, 30]

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

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