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.

A190091 Number of rhombuses on a (n+1) X 3 grid.

Table of values

n a(n)
1 2
2 6
3 10
4 15
5 20
6 26
7 32
8 39
9 46
10 54
11 62
12 71
13 80
14 90
15 100
16 111
17 122
18 134
19 146
20 159
21 172
22 186
23 200
24 215
25 230
26 246
27 262
28 279
29 296
30 314
31 332
32 351
33 370
34 390
35 410
36 431
37 452
38 474
39 496
40 519
41 542
42 566
43 590
44 615
45 640
46 666
47 692
48 719
49 746
50 774
51 802
52 831
53 860
54 890
55 920
56 951
57 982

List of values

[2, 6, 10, 15, 20, 26, 32, 39, 46, 54, 62, 71, 80, 90, 100, 111, 122, 134, 146, 159, 172, 186, 200, 215, 230, 246, 262, 279, 296, 314, 332, 351, 370, 390, 410, 431, 452, 474, 496, 519, 542, 566, 590, 615, 640, 666, 692, 719, 746, 774, 802, 831, 860, 890, 920, 951, 982]