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.

A340648 a(n) is the maximum number of nonzero entries in an n X n sign-restricted matrix.

Table of values

n a(n)
0 0
1 1
2 3
3 6
4 11
5 18
6 26
7 35
8 46
9 59
10 73
11 88
12 105
13 124
14 144
15 165
16 188
17 213
18 239
19 266
20 295
21 326
22 358
23 391
24 426
25 463
26 501
27 540
28 581
29 624
30 668
31 713
32 760
33 809
34 859
35 910
36 963
37 1018
38 1074
39 1131
40 1190
41 1251
42 1313
43 1376
44 1441
45 1508
46 1576
47 1645
48 1716
49 1789
50 1863
51 1938
52 2015

List of values

[0, 1, 3, 6, 11, 18, 26, 35, 46, 59, 73, 88, 105, 124, 144, 165, 188, 213, 239, 266, 295, 326, 358, 391, 426, 463, 501, 540, 581, 624, 668, 713, 760, 809, 859, 910, 963, 1018, 1074, 1131, 1190, 1251, 1313, 1376, 1441, 1508, 1576, 1645, 1716, 1789, 1863, 1938, 2015]