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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.

A332374 Consider a partition of the plane (a_1,a_2) in R X R by the lines a_1*x_1 + a_2*x_2 = 1 for 0 <= x_1 <= m-1, 1 <= x_2 <= 1-1. The cells are (generalized) triangles and quadrilaterals. Triangle read by rows: T(m,n) = total number of vertices in the partition for m >= n >= 2.

Table of values

n a(n)
2 3
3 7
4 15
5 13
6 28
7 53
8 21
9 44
10 82
11 127
12 31
13 65
14 122
15 190
16 285
17 43
18 89
19 166
20 256
21 382
22 511
23 57
24 118
25 220
26 339
27 506
28 678
29 901
30 73
31 150
32 279
33 430
34 642
35 860
36 1142
37 1447
38 91
39 187
40 348
41 536
42 801
43 1073
44 1424
45 1804
46 2249
47 111
48 227
49 421
50 647
51 966
52 1290
53 1710
54 2164
55 2696
56 3231

List of values

[3, 7, 15, 13, 28, 53, 21, 44, 82, 127, 31, 65, 122, 190, 285, 43, 89, 166, 256, 382, 511, 57, 118, 220, 339, 506, 678, 901, 73, 150, 279, 430, 642, 860, 1142, 1447, 91, 187, 348, 536, 801, 1073, 1424, 1804, 2249, 111, 227, 421, 647, 966, 1290, 1710, 2164, 2696, 3231]