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.

A286226 Number of compositions (ordered partitions) of n into parts with an odd number of prime divisors (counted with multiplicity).

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 1
5 3
6 2
7 6
8 7
9 10
10 18
11 22
12 39
13 54
14 81
15 127
16 179
17 282
18 412
19 620
20 940
21 1384
22 2106
23 3129
24 4698
25 7062
26 10531
27 15856
28 23695
29 35541
30 53304
31 79773
32 119723
33 179262
34 268748
35 402832
36 603484
37 904821
38 1355652
39 2031963
40 3045374
41 4563604
42 6840316
43 10250612
44 15363248
45 23024904
46 34506390

List of values

[1, 0, 1, 1, 1, 3, 2, 6, 7, 10, 18, 22, 39, 54, 81, 127, 179, 282, 412, 620, 940, 1384, 2106, 3129, 4698, 7062, 10531, 15856, 23695, 35541, 53304, 79773, 119723, 179262, 268748, 402832, 603484, 904821, 1355652, 2031963, 3045374, 4563604, 6840316, 10250612, 15363248, 23024904, 34506390]

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

Content is available under The OEIS End-User License Agreement.