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.

A285578 a(1) = a(3) = a(4) = 2, a(2) = 1; a(n) = a(a(n-2)) + a(n-a(n-4)-2) for n > 4.

Table of values

n a(n)
1 2
2 1
3 2
4 2
5 3
6 3
7 4
8 4
9 4
10 5
11 5
12 6
13 7
14 7
15 8
16 8
17 8
18 8
19 8
20 9
21 9
22 10
23 11
24 12
25 12
26 13
27 13
28 14
29 15
30 15
31 16
32 16
33 16
34 16
35 16
36 16
37 16
38 17
39 17
40 18
41 19
42 19
43 20
44 20
45 21
46 21
47 21
48 22
49 22
50 23
51 24
52 25
53 27
54 27
55 28
56 28
57 28
58 29
59 29
60 30
61 31
62 31
63 32
64 32
65 32
66 32
67 32
68 32
69 32
70 32
71 32
72 33
73 33
74 34
75 35

List of values

[2, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 6, 7, 7, 8, 8, 8, 8, 8, 9, 9, 10, 11, 12, 12, 13, 13, 14, 15, 15, 16, 16, 16, 16, 16, 16, 16, 17, 17, 18, 19, 19, 20, 20, 21, 21, 21, 22, 22, 23, 24, 25, 27, 27, 28, 28, 28, 29, 29, 30, 31, 31, 32, 32, 32, 32, 32, 32, 32, 32, 32, 33, 33, 34, 35]

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

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