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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.

A383718 a(n) is the multinomial coefficient (length of n in binary) choose (the lengths of runs in n's binary expansion).

Table of values

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

List of values

[1, 1, 2, 1, 3, 6, 3, 1, 4, 12, 24, 12, 6, 12, 4, 1, 5, 20, 60, 30, 60, 120, 60, 20, 10, 30, 60, 30, 10, 20, 5, 1, 6, 30, 120, 60, 180, 360, 180, 60, 120, 360, 720, 360, 180, 360, 120, 30, 15, 60, 180, 90, 180, 360, 180, 60, 20, 60, 120, 60, 15, 30, 6, 1]

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