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.

A327330 "Concave pentagon" toothpick sequence (see Comments for precise definition).

Table of values

n a(n)
0 0
1 1
2 3
3 7
4 11
5 15
6 23
7 33
8 41
9 45
10 53
11 63
12 75
13 89
14 111
15 133
16 149
17 153
18 161
19 171
20 183
21 197
22 219
23 241
24 261
25 275
26 299
27 327
28 361
29 403
30 463
31 511
32 547
33 551
34 559
35 569
36 581
37 595
38 617
39 639
40 659
41 673
42 697
43 725
44 759
45 801
46 861
47 909
48 949
49 967
50 995
51 1029
52 1075
53 1125
54 1183
55 1233
56 1281
57 1321
58 1389
59 1465
60 1549
61 1657

List of values

[0, 1, 3, 7, 11, 15, 23, 33, 41, 45, 53, 63, 75, 89, 111, 133, 149, 153, 161, 171, 183, 197, 219, 241, 261, 275, 299, 327, 361, 403, 463, 511, 547, 551, 559, 569, 581, 595, 617, 639, 659, 673, 697, 725, 759, 801, 861, 909, 949, 967, 995, 1029, 1075, 1125, 1183, 1233, 1281, 1321, 1389, 1465, 1549, 1657]