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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.

A151555 G.f.: (1 + 2x) * Product_{n>=1} (1 + x^(2^n-1) + 2*x^(2^n)).

Table of values

n a(n)
0 1
1 3
2 4
3 5
4 5
5 10
6 12
7 9
8 5
9 10
10 13
11 15
12 20
13 32
14 32
15 17
16 5
17 10
18 13
19 15
20 20
21 32
22 33
23 23
24 20
25 33
26 41
27 50
28 72
29 96
30 80
31 33
32 5
33 10
34 13
35 15
36 20
37 32
38 33
39 23
40 20
41 33
42 41
43 50
44 72
45 96
46 81
47 39
48 20
49 33
50 41
51 50
52 72
53 97
54 89
55 66
56 73
57 107
58 132
59 172
60 240
61 272
62 192
63 65
64 5
65 10
66 13
67 15
68 20
69 32
70 33
71 23

List of values

[1, 3, 4, 5, 5, 10, 12, 9, 5, 10, 13, 15, 20, 32, 32, 17, 5, 10, 13, 15, 20, 32, 33, 23, 20, 33, 41, 50, 72, 96, 80, 33, 5, 10, 13, 15, 20, 32, 33, 23, 20, 33, 41, 50, 72, 96, 81, 39, 20, 33, 41, 50, 72, 97, 89, 66, 73, 107, 132, 172, 240, 272, 192, 65, 5, 10, 13, 15, 20, 32, 33, 23]

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