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.

A280200 Expansion of 1/(1 - Sum_{k>=2} floor(1/omega(2*k-1))*x^(2*k-1)), where omega() is the number of distinct prime factors (A001221).

Table of values

n a(n)
0 1
1 0
2 0
3 1
4 0
5 1
6 1
7 1
8 2
9 2
10 3
11 4
12 5
13 7
14 9
15 11
16 16
17 21
18 26
19 37
20 47
21 61
22 84
23 108
24 143
25 191
26 249
27 331
28 437
29 575
30 763
31 1004
32 1326
33 1754
34 2311
35 3055
36 4036
37 5323
38 7033
39 9288
40 12257
41 16193
42 21379
43 28223
44 37278
45 49212
46 64984
47 85815
48 113297
49 149614
50 197551
51 260839
52 344439
53 454795
54 600517
55 792958
56 1047023
57 1382519
58 1825533
59 2410456
60 3182845

List of values

[1, 0, 0, 1, 0, 1, 1, 1, 2, 2, 3, 4, 5, 7, 9, 11, 16, 21, 26, 37, 47, 61, 84, 108, 143, 191, 249, 331, 437, 575, 763, 1004, 1326, 1754, 2311, 3055, 4036, 5323, 7033, 9288, 12257, 16193, 21379, 28223, 37278, 49212, 64984, 85815, 113297, 149614, 197551, 260839, 344439, 454795, 600517, 792958, 1047023, 1382519, 1825533, 2410456, 3182845]