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.

A177687 Number of distinct transpositions of digits (zeros and units) in n-th prime written in base 2.

Table of values

n a(n)
1 2
2 1
3 3
4 1
5 4
6 4
7 10
8 10
9 5
10 5
11 1
12 20
13 20
14 15
15 6
16 15
17 6
18 6
19 35
20 35
21 35
22 21
23 35
24 35
25 35
26 35
27 21
28 21
29 21
30 35
31 1
32 56
33 56
34 70
35 70
36 56
37 56
38 70
39 56
40 56
41 56
42 56
43 8
44 56
45 70
46 56
47 56
48 8
49 56
50 56
51 56
52 8
53 56
54 8
55 36
56 126
57 126
58 126
59 126
60 126
61 126
62 126
63 126
64 84
65 126
66 84
67 126
68 126
69 84
70 84
71 126
72 84

List of values

[2, 1, 3, 1, 4, 4, 10, 10, 5, 5, 1, 20, 20, 15, 6, 15, 6, 6, 35, 35, 35, 21, 35, 35, 35, 35, 21, 21, 21, 35, 1, 56, 56, 70, 70, 56, 56, 70, 56, 56, 56, 56, 8, 56, 70, 56, 56, 8, 56, 56, 56, 8, 56, 8, 36, 126, 126, 126, 126, 126, 126, 126, 126, 84, 126, 84, 126, 126, 84, 84, 126, 84]

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

Content is available under The OEIS End-User License Agreement.