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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.

A241717 The number of P-positions in the game of Nim with up to 3 piles, allowing for piles of zero, such that the number of objects in the largest pile is n.

Table of values

n a(n)
0 1
1 3
2 3
3 9
4 3
5 9
6 15
7 21
8 3
9 9
10 15
11 21
12 27
13 33
14 39
15 45
16 3
17 9
18 15
19 21
20 27
21 33
22 39
23 45
24 51
25 57
26 63
27 69
28 75
29 81
30 87
31 93
32 3
33 9
34 15
35 21
36 27
37 33
38 39
39 45
40 51
41 57
42 63
43 69
44 75
45 81
46 87
47 93
48 99
49 105
50 111
51 117
52 123
53 129
54 135
55 141
56 147
57 153
58 159
59 165
60 171

List of values

[1, 3, 3, 9, 3, 9, 15, 21, 3, 9, 15, 21, 27, 33, 39, 45, 3, 9, 15, 21, 27, 33, 39, 45, 51, 57, 63, 69, 75, 81, 87, 93, 3, 9, 15, 21, 27, 33, 39, 45, 51, 57, 63, 69, 75, 81, 87, 93, 99, 105, 111, 117, 123, 129, 135, 141, 147, 153, 159, 165, 171]

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

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