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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.

A301895 a(n) = (number of 1's in binary expansion of n)^(number of 0's in binary expansion of n).

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 1
5 2
6 2
7 1
8 1
9 4
10 4
11 3
12 4
13 3
14 3
15 1
16 1
17 8
18 8
19 9
20 8
21 9
22 9
23 4
24 8
25 9
26 9
27 4
28 9
29 4
30 4
31 1
32 1
33 16
34 16
35 27
36 16
37 27
38 27
39 16
40 16
41 27
42 27
43 16
44 27
45 16
46 16
47 5
48 16
49 27
50 27
51 16
52 27
53 16
54 16
55 5
56 27
57 16
58 16
59 5
60 16
61 5
62 5
63 1
64 1
65 32
66 32
67 81
68 32
69 81
70 81
71 64
72 32
73 81
74 81
75 64
76 81
77 64
78 64
79 25
80 32

List of values

[0, 1, 1, 1, 1, 2, 2, 1, 1, 4, 4, 3, 4, 3, 3, 1, 1, 8, 8, 9, 8, 9, 9, 4, 8, 9, 9, 4, 9, 4, 4, 1, 1, 16, 16, 27, 16, 27, 27, 16, 16, 27, 27, 16, 27, 16, 16, 5, 16, 27, 27, 16, 27, 16, 16, 5, 27, 16, 16, 5, 16, 5, 5, 1, 1, 32, 32, 81, 32, 81, 81, 64, 32, 81, 81, 64, 81, 64, 64, 25, 32]

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