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.

A320063 A sequence which changes by one or zero: a(n) = a(n-1-a(a(n-1))) + a(a(a(n-1))) for n > 1, a(n) = n for n < 2.

Table of values

n a(n)
0 0
1 1
2 1
3 2
4 2
5 3
6 3
7 3
8 4
9 4
10 4
11 5
12 6
13 6
14 6
15 7
16 8
17 8
18 8
19 8
20 9
21 10
22 10
23 10
24 10
25 11
26 12
27 12
28 13
29 13
30 13
31 13
32 14
33 15
34 15
35 15
36 16
37 17
38 17
39 17
40 17
41 18
42 19
43 19
44 19
45 20
46 20
47 21
48 21
49 21
50 21
51 21
52 22
53 23
54 23
55 23
56 24
57 24
58 25
59 26
60 27
61 27
62 27
63 27
64 27
65 28
66 28
67 29
68 29
69 29

List of values

[0, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 8, 8, 9, 10, 10, 10, 10, 11, 12, 12, 13, 13, 13, 13, 14, 15, 15, 15, 16, 17, 17, 17, 17, 18, 19, 19, 19, 20, 20, 21, 21, 21, 21, 21, 22, 23, 23, 23, 24, 24, 25, 26, 27, 27, 27, 27, 27, 28, 28, 29, 29, 29]

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

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