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.

A306302 Number of regions into which a figure made up of a row of n adjacent congruent rectangles is divided upon drawing diagonals of all possible rectangles (a(0)=0 by convention).

Table of values

n a(n)
0 0
1 4
2 16
3 46
4 104
5 214
6 380
7 648
8 1028
9 1562
10 2256
11 3208
12 4384
13 5924
14 7792
15 10052
16 12744
17 16060
18 19880
19 24486
20 29748
21 35798
22 42648
23 50648
24 59544
25 69700
26 80992
27 93654
28 107596
29 123374
30 140488
31 159704
32 180696
33 203684
34 228624
35 255892
36 285152
37 317400
38 352096
39 389576

List of values

[0, 4, 16, 46, 104, 214, 380, 648, 1028, 1562, 2256, 3208, 4384, 5924, 7792, 10052, 12744, 16060, 19880, 24486, 29748, 35798, 42648, 50648, 59544, 69700, 80992, 93654, 107596, 123374, 140488, 159704, 180696, 203684, 228624, 255892, 285152, 317400, 352096, 389576]