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.

A159915 a(n) = floor((n+1)/4)*floor(n/2).

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 2
5 2
6 3
7 6
8 8
9 8
10 10
11 15
12 18
13 18
14 21
15 28
16 32
17 32
18 36
19 45
20 50
21 50
22 55
23 66
24 72
25 72
26 78
27 91
28 98
29 98
30 105
31 120
32 128
33 128
34 136
35 153
36 162
37 162
38 171
39 190
40 200
41 200
42 210
43 231
44 242
45 242
46 253
47 276
48 288
49 288
50 300
51 325
52 338
53 338
54 351
55 378
56 392
57 392
58 406
59 435
60 450
61 450

List of values

[0, 0, 0, 1, 2, 2, 3, 6, 8, 8, 10, 15, 18, 18, 21, 28, 32, 32, 36, 45, 50, 50, 55, 66, 72, 72, 78, 91, 98, 98, 105, 120, 128, 128, 136, 153, 162, 162, 171, 190, 200, 200, 210, 231, 242, 242, 253, 276, 288, 288, 300, 325, 338, 338, 351, 378, 392, 392, 406, 435, 450, 450]