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.

A278823 4-Portolan numbers: number of regions formed by n-secting the angles of a square.

Table of values

n a(n)
1 1
2 4
3 29
4 32
5 93
6 84
7 189
8 188
9 321
10 316
11 489
12 460
13 693
14 676
15 933
16 916
17 1205
18 1180
19 1505
20 1496
21 1849
22 1836
23 2229
24 2188
25 2645
26 2616
27 3097
28 3060
29 3577
30 3536
31 4089
32 4064
33 4645
34 4604
35 5237
36 5176
37 5857
38 5808
39 6513
40 6472
41 7201
42 7160
43 7933
44 7900
45 8693
46 8648
47 9497

List of values

[1, 4, 29, 32, 93, 84, 189, 188, 321, 316, 489, 460, 693, 676, 933, 916, 1205, 1180, 1505, 1496, 1849, 1836, 2229, 2188, 2645, 2616, 3097, 3060, 3577, 3536, 4089, 4064, 4645, 4604, 5237, 5176, 5857, 5808, 6513, 6472, 7201, 7160, 7933, 7900, 8693, 8648, 9497]