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.

A061920 A list of equal temperaments (equal divisions of the octave) whose nearest scale steps are closer and closer approximations to the 7 pairs of complementary target ratios needed to express the 12 unsymmetrical steps of the untempered (Just Intonation) scale known as the Duodene: 3/2 and 4/3, 5/4 and 8/5, 6/5 and 5/3, 9/8 and 16/9, 10/9 and 9/5, 16/15 and 15/8 and 45/32 and 64/45.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 10
10 12
11 19
12 22
13 31
14 34
15 41
16 53
17 118
18 171
19 289
20 323
21 376
22 441
23 494
24 559
25 612
26 1171
27 1783
28 2513
29 3684
30 4296
31 12888
32 16572
33 20868
34 25164
35 44249
36 48545
37 52841
38 57137
39 69413
40 73709
41 78005
42 151714
43 229719
44 307724
45 537443
46 714321

List of values

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 19, 22, 31, 34, 41, 53, 118, 171, 289, 323, 376, 441, 494, 559, 612, 1171, 1783, 2513, 3684, 4296, 12888, 16572, 20868, 25164, 44249, 48545, 52841, 57137, 69413, 73709, 78005, 151714, 229719, 307724, 537443, 714321]

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

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