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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.

A299486 Solution a( ) of the complementary equation a(n) = b(n-1) + b(n-2) + b(n-3), where a(0) = 1, a(1) = 2, a(2) = 3; see Comments.

Table of values

n a(n)
0 1
1 2
2 3
3 15
4 18
5 21
6 24
7 27
8 30
9 33
10 36
11 39
12 43
13 47
14 52
15 56
16 61
17 65
18 70
19 74
20 79
21 83
22 88
23 92
24 97
25 101
26 106
27 110
28 115
29 119
30 123
31 127
32 131
33 135
34 139
35 143
36 147
37 150
38 154
39 158
40 162
41 166
42 170
43 174
44 177
45 181
46 185
47 189
48 193
49 197
50 201
51 204
52 208
53 212
54 216
55 220
56 224

List of values

[1, 2, 3, 15, 18, 21, 24, 27, 30, 33, 36, 39, 43, 47, 52, 56, 61, 65, 70, 74, 79, 83, 88, 92, 97, 101, 106, 110, 115, 119, 123, 127, 131, 135, 139, 143, 147, 150, 154, 158, 162, 166, 170, 174, 177, 181, 185, 189, 193, 197, 201, 204, 208, 212, 216, 220, 224]

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

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