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.

A377278 Denominators in a harmonic triangle; q-analog of A126615, here q = 2.

Table of values

n a(n)
1 1
2 3
3 3
4 3
5 21
6 7
7 3
8 21
9 105
10 15
11 3
12 21
13 105
14 465
15 31
16 3
17 21
18 105
19 465
20 1953
21 63
22 3
23 21
24 105
25 465
26 1953
27 8001
28 127
29 3
30 21
31 105
32 465
33 1953
34 8001
35 32385
36 255
37 3
38 21
39 105
40 465
41 1953
42 8001
43 32385
44 130305
45 511
46 3
47 21
48 105
49 465
50 1953
51 8001
52 32385
53 130305
54 522753
55 1023

List of values

[1, 3, 3, 3, 21, 7, 3, 21, 105, 15, 3, 21, 105, 465, 31, 3, 21, 105, 465, 1953, 63, 3, 21, 105, 465, 1953, 8001, 127, 3, 21, 105, 465, 1953, 8001, 32385, 255, 3, 21, 105, 465, 1953, 8001, 32385, 130305, 511, 3, 21, 105, 465, 1953, 8001, 32385, 130305, 522753, 1023]