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.

A172143 a(n) = (A172126(n) - 1)/3.

Table of values

n a(n)
1 0
2 1
3 3
4 5
5 13
6 21
7 28
8 53
9 85
10 113
11 213
12 227
13 341
14 453
15 853
16 909
17 1365
18 1813
19 1820
20 3413
21 3637
22 5461
23 7253
24 7281
25 13653
26 14549
27 14563
28 21845
29 29013
30 29125
31 54613
32 58197
33 58253
34 87381
35 116053
36 116501
37 116508
38 218453
39 232789
40 233013
41 349525
42 464213
43 466005
44 466033

List of values

[0, 1, 3, 5, 13, 21, 28, 53, 85, 113, 213, 227, 341, 453, 853, 909, 1365, 1813, 1820, 3413, 3637, 5461, 7253, 7281, 13653, 14549, 14563, 21845, 29013, 29125, 54613, 58197, 58253, 87381, 116053, 116501, 116508, 218453, 232789, 233013, 349525, 464213, 466005, 466033]