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.

A286224 Number of compositions (ordered partitions) of n into parts with an odd number of distinct prime divisors.

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 2
5 3
6 4
7 8
8 11
9 19
10 28
11 47
12 72
13 116
14 182
15 289
16 460
17 724
18 1153
19 1820
20 2891
21 4572
22 7249
23 11482
24 18190
25 28821
26 45651
27 72338
28 114582
29 181549
30 287597
31 455647
32 721849
33 1143590
34 1811753
35 2870247
36 4547245
37 7203933
38 11412922
39 18080907
40 28644799
41 45380602
42 71894401
43 113899027
44 180444897
45 285870668

List of values

[1, 0, 1, 1, 2, 3, 4, 8, 11, 19, 28, 47, 72, 116, 182, 289, 460, 724, 1153, 1820, 2891, 4572, 7249, 11482, 18190, 28821, 45651, 72338, 114582, 181549, 287597, 455647, 721849, 1143590, 1811753, 2870247, 4547245, 7203933, 11412922, 18080907, 28644799, 45380602, 71894401, 113899027, 180444897, 285870668]

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

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