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.

A003411 Losing initial positions in game: two players alternate in removing >= 1 stones; last player wins; first player may not remove all stones; each move <= 3 times previous move.

Table of values

n a(n)
0 1
1 2
2 3
3 4
4 6
5 8
6 11
7 15
8 21
9 29
10 40
11 55
12 76
13 105
14 145
15 200
16 276
17 381
18 526
19 726
20 1002
21 1383
22 1909
23 2635
24 3637
25 5020
26 6929
27 9564
28 13201
29 18221
30 25150
31 34714
32 47915
33 66136
34 91286
35 126000
36 173915
37 240051
38 331337
39 457337
40 631252
41 871303
42 1202640
43 1659977

List of values

[1, 2, 3, 4, 6, 8, 11, 15, 21, 29, 40, 55, 76, 105, 145, 200, 276, 381, 526, 726, 1002, 1383, 1909, 2635, 3637, 5020, 6929, 9564, 13201, 18221, 25150, 34714, 47915, 66136, 91286, 126000, 173915, 240051, 331337, 457337, 631252, 871303, 1202640, 1659977]