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.

A075701 a(1)=1, a(n+1)=sigma(a(n))-2*a(n).

Table of values

n a(n)
1 1
2 -1
3 3
4 -2
5 7
6 -6
7 24
8 12
9 4
10 -1
11 3
12 -2
13 7
14 -6
15 24
16 12
17 4
18 -1
19 3
20 -2
21 7
22 -6
23 24
24 12
25 4
26 -1
27 3
28 -2
29 7
30 -6
31 24
32 12
33 4
34 -1
35 3
36 -2
37 7
38 -6
39 24
40 12
41 4
42 -1
43 3
44 -2
45 7
46 -6
47 24
48 12
49 4
50 -1
51 3
52 -2
53 7
54 -6
55 24
56 12
57 4
58 -1
59 3
60 -2
61 7
62 -6
63 24
64 12
65 4
66 -1
67 3
68 -2
69 7
70 -6
71 24
72 12
73 4
74 -1
75 3
76 -2
77 7
78 -6
79 24
80 12
81 4
82 -1
83 3
84 -2
85 7
86 -6
87 24
88 12
89 4
90 -1
91 3
92 -2
93 7
94 -6

List of values

[1, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6, 24, 12, 4, -1, 3, -2, 7, -6]