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.

A381552 Triangle read by rows T(n,k) is the number of diamond coverings for a specific number of diamonds covering an odd length row of triangles.

Table of values

n a(n)
0 3
1 4
2 4
3 5
4 12
5 4
6 6
7 25
8 20
9 4
10 7
11 44
12 61
13 28
14 4
15 8
16 70
17 146
18 113
19 36
20 4
21 9
22 104
23 301
24 344
25 181
26 44
27 4
28 10
29 147
30 560
31 876
32 670
33 265
34 52
35 4
36 11
37 200
38 966
39 1968
40 2035
41 1156
42 365
43 60
44 4
45 12
46 264
47 1572
48 4026
49 5368
50 4082
51 1834
52 481
53 68
54 4
55 13
56 340
57 2442
58 7656
59 12727
60 12376
61 7385
62 2736
63 613
64 76
65 4
66 14
67 429
68 3652
69 13728
70 27742
71 33397
72 25312
73 12376
74 3894
75 761
76 84
77 4

List of values

[3, 4, 4, 5, 12, 4, 6, 25, 20, 4, 7, 44, 61, 28, 4, 8, 70, 146, 113, 36, 4, 9, 104, 301, 344, 181, 44, 4, 10, 147, 560, 876, 670, 265, 52, 4, 11, 200, 966, 1968, 2035, 1156, 365, 60, 4, 12, 264, 1572, 4026, 5368, 4082, 1834, 481, 68, 4, 13, 340, 2442, 7656, 12727, 12376, 7385, 2736, 613, 76, 4, 14, 429, 3652, 13728, 27742, 33397, 25312, 12376, 3894, 761, 84, 4]