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.

A194136 T(n,k) = number of ways to arrange k indistinguishable points on an n X n X n triangular grid so that no three points are collinear at any angle.

Table of values

n a(n)
1 1
2 0
3 3
4 0
5 3
6 6
7 0
8 1
9 15
10 10
11 0
12 0
13 17
14 45
15 15
16 0
17 0
18 6
19 105
20 105
21 21
22 0
23 0
24 0
25 114
26 407
27 210
28 28
29 0
30 0
31 0
32 39
33 843
34 1216
35 378
36 36
37 0
38 0
39 0
40 1
41 792
42 4122
43 3036
44 630
45 45
46 0
47 0
48 0
49 0
50 244
51 7587
52 14988
53 6696
54 990
55 55
56 0
57 0
58 0
59 0
60 9
61 6480
62 43836
63 45414
64 13428
65 1485
66 66
67 0
68 0
69 0
70 0

List of values

[1, 0, 3, 0, 3, 6, 0, 1, 15, 10, 0, 0, 17, 45, 15, 0, 0, 6, 105, 105, 21, 0, 0, 0, 114, 407, 210, 28, 0, 0, 0, 39, 843, 1216, 378, 36, 0, 0, 0, 1, 792, 4122, 3036, 630, 45, 0, 0, 0, 0, 244, 7587, 14988, 6696, 990, 55, 0, 0, 0, 0, 9, 6480, 43836, 45414, 13428, 1485, 66, 0, 0, 0, 0]