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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.

A087655 a[n] = a[abs[n - a[n-1]]] + a[abs[n - a[n-2]]]+ a[abs[n - a[n-3]]].

Table of values

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

List of values

[1, 1, 1, 3, 7, 9, 5, 3, 13, 13, 5, 7, 13, 19, 7, 15, 15, 7, 13, 25, 25, 15, 5, 27, 39, 39, 15, 23, 41, 17, 35, 21, 23, 19, 41, 35, 11, 17, 41, 47, 37, 15, 35, 59, 49, 19, 31, 57, 27, 23, 59, 85, 47, 47, 23, 49, 35, 59, 41, 53, 29, 61, 33, 77, 31, 69, 49, 25, 85, 81, 51, 51, 33, 47]

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

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