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.

A345118 a(n) is the sum of the lengths of all the segments used to draw a square of side n representing a basketweave pattern where all the multiple strands are of unit width, the horizontal ones appearing as 1 X 3 rectangles, while the vertical ones as unit area squares.

Table of values

n a(n)
0 0
1 4
2 11
3 20
4 34
5 50
6 69
7 92
8 116
9 144
10 175
11 208
12 246
13 286
14 329
15 376
16 424
17 476
18 531
19 588
20 650
21 714
22 781
23 852
24 924
25 1000
26 1079
27 1160
28 1246
29 1334
30 1425
31 1520
32 1616
33 1716
34 1819
35 1924
36 2034
37 2146
38 2261
39 2380
40 2500
41 2624
42 2751
43 2880
44 3014
45 3150
46 3289
47 3432
48 3576
49 3724

List of values

[0, 4, 11, 20, 34, 50, 69, 92, 116, 144, 175, 208, 246, 286, 329, 376, 424, 476, 531, 588, 650, 714, 781, 852, 924, 1000, 1079, 1160, 1246, 1334, 1425, 1520, 1616, 1716, 1819, 1924, 2034, 2146, 2261, 2380, 2500, 2624, 2751, 2880, 3014, 3150, 3289, 3432, 3576, 3724]