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.

A075780 Triangle T(n,k) = f(n,k,n-2), n >= 2, 1 <= k <= n-1, where f is given below.

Table of values

n a(n)
2 0
3 3
4 3
5 12
6 14
7 12
8 30
9 45
10 45
11 30
12 60
13 114
14 138
15 114
16 60
17 105
18 245
19 357
20 357
21 245
22 105
23 168
24 468
25 808
26 960
27 808
28 468
29 168
30 252
31 819
32 1647
33 2286
34 2286
35 1647
36 819
37 252
38 360
39 1340
40 3090
41 4935
42 5740
43 4935
44 3090
45 1340
46 360
47 495
48 2079
49 5423
50 9834
51 13090
52 13090
53 9834
54 5423

List of values

[0, 3, 3, 12, 14, 12, 30, 45, 45, 30, 60, 114, 138, 114, 60, 105, 245, 357, 357, 245, 105, 168, 468, 808, 960, 808, 468, 168, 252, 819, 1647, 2286, 2286, 1647, 819, 252, 360, 1340, 3090, 4935, 5740, 4935, 3090, 1340, 360, 495, 2079, 5423, 9834, 13090, 13090, 9834, 5423]