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.

A382521 Square array A(n,k), n>=0, k>=0, read by antidiagonals downwards, where n unlabeled objects are distributed into k containers of three kinds. Containers may be left empty.

Table of values

n a(n)
0 1
1 3
2 0
3 6
4 3
5 0
6 10
7 9
8 3
9 0
10 15
11 18
12 15
13 3
14 0
15 21
16 30
17 36
18 18
19 3
20 0
21 28
22 45
23 66
24 55
25 24
26 3
27 0
28 36
29 63
30 105
31 114
32 81
33 27
34 3
35 0
36 45
37 84
38 153
39 195
40 189
41 108
42 33
43 3
44 0
45 55
46 108
47 210
48 298
49 348
50 276
51 145
52 36
53 3
54 0
55 66
56 135
57 276
58 423
59 558
60 552
61 405
62 180
63 42
64 3
65 0
66 78
67 165
68 351
69 570
70 819
71 936
72 858
73 549
74 225
75 45
76 3
77 0

List of values

[1, 3, 0, 6, 3, 0, 10, 9, 3, 0, 15, 18, 15, 3, 0, 21, 30, 36, 18, 3, 0, 28, 45, 66, 55, 24, 3, 0, 36, 63, 105, 114, 81, 27, 3, 0, 45, 84, 153, 195, 189, 108, 33, 3, 0, 55, 108, 210, 298, 348, 276, 145, 36, 3, 0, 66, 135, 276, 423, 558, 552, 405, 180, 42, 3, 0, 78, 165, 351, 570, 819, 936, 858, 549, 225, 45, 3, 0]