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.

A054925 a(n) = ceiling(n*(n-1)/4).

Table of values

n a(n)
0 0
1 0
2 1
3 2
4 3
5 5
6 8
7 11
8 14
9 18
10 23
11 28
12 33
13 39
14 46
15 53
16 60
17 68
18 77
19 86
20 95
21 105
22 116
23 127
24 138
25 150
26 163
27 176
28 189
29 203
30 218
31 233
32 248
33 264
34 281
35 298
36 315
37 333
38 352
39 371
40 390
41 410
42 431
43 452
44 473
45 495
46 518
47 541
48 564
49 588
50 613
51 638
52 663
53 689
54 716
55 743
56 770
57 798

List of values

[0, 0, 1, 2, 3, 5, 8, 11, 14, 18, 23, 28, 33, 39, 46, 53, 60, 68, 77, 86, 95, 105, 116, 127, 138, 150, 163, 176, 189, 203, 218, 233, 248, 264, 281, 298, 315, 333, 352, 371, 390, 410, 431, 452, 473, 495, 518, 541, 564, 588, 613, 638, 663, 689, 716, 743, 770, 798]