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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.

A190098 T(n,k)=Number of rhombuses on a (n+1)X(k+1) grid.

Table of values

n a(n)
1 1
2 2
3 2
4 3
5 6
6 3
7 4
8 10
9 10
10 4
11 5
12 15
13 22
14 15
15 5
16 6
17 20
18 36
19 36
20 20
21 6
22 7
23 26
24 50
25 66
26 50
27 26
28 7
29 8
30 32
31 66
32 96
33 96
34 66
35 32
36 8
37 9
38 39
39 82
40 130
41 151
42 130
43 82
44 39
45 9
46 10
47 46
48 100
49 164
50 212
51 212
52 164
53 100
54 46
55 10
56 11
57 54
58 120
59 204
60 273
61 312
62 273
63 204
64 120
65 54
66 11
67 12
68 62
69 142
70 248
71 344

List of values

[1, 2, 2, 3, 6, 3, 4, 10, 10, 4, 5, 15, 22, 15, 5, 6, 20, 36, 36, 20, 6, 7, 26, 50, 66, 50, 26, 7, 8, 32, 66, 96, 96, 66, 32, 8, 9, 39, 82, 130, 151, 130, 82, 39, 9, 10, 46, 100, 164, 212, 212, 164, 100, 46, 10, 11, 54, 120, 204, 273, 312, 273, 204, 120, 54, 11, 12, 62, 142, 248, 344]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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