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.

A329642 a(n) = Sum_{d|n} [1 == A008683(n/d)] * A323244(d), where A323244(x) gives the deficiency of A156552(x).

Table of values

n a(n)
1 0
2 1
3 1
4 2
5 1
6 4
7 1
8 6
9 0
10 5
11 1
12 11
13 1
14 16
15 2
16 6
17 1
18 13
19 1
20 19
21 -3
22 18
23 1
24 24
25 -4
26 46
27 4
28 23
29 1
30 13
31 1
32 30
33 14
34 82
35 -2
36 18
37 1
38 256
39 -12
40 24
41 1
42 39
43 1
44 67
45 9
46 226
47 1
48 52
49 -12
50 20
51 8
52 131
53 1
54 28
55 -19
56 72
57 -12
58 748
59 1
60 53
61 1
62 1362
63 17
64 22
65 10
66 45
67 1
68 215
69 254
70 43
71 1
72 48
73 1
74 3838
75 11
76 407
77 -10
78 109
79 1
80 84
81 -12
82 5458
83 1
84 48
85 -72
86 12250
87 -348
88 32
89 1
90 18

List of values

[0, 1, 1, 2, 1, 4, 1, 6, 0, 5, 1, 11, 1, 16, 2, 6, 1, 13, 1, 19, -3, 18, 1, 24, -4, 46, 4, 23, 1, 13, 1, 30, 14, 82, -2, 18, 1, 256, -12, 24, 1, 39, 1, 67, 9, 226, 1, 52, -12, 20, 8, 131, 1, 28, -19, 72, -12, 748, 1, 53, 1, 1362, 17, 22, 10, 45, 1, 215, 254, 43, 1, 48, 1, 3838, 11, 407, -10, 109, 1, 84, -12, 5458, 1, 48, -72, 12250, -348, 32, 1, 18]