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.

A172176 Triangle T(n, k) = 1 + (n + k - n*k)*(2*n - k - n*(n-k)), read by rows.

Table of values

n a(n)
0 1
1 2
2 2
3 1
4 2
5 1
6 -8
7 0
8 0
9 -8
10 -31
11 -4
12 5
13 -4
14 -31
15 -74
16 -10
17 22
18 22
19 -10
20 -74
21 -143
22 -18
23 57
24 82
25 57
26 -18
27 -143
28 -244
29 -28
30 116
31 188
32 188
33 116
34 -28
35 -244
36 -383
37 -40
38 205
39 352
40 401
41 352
42 205
43 -40
44 -383
45 -566
46 -54
47 330
48 586
49 714
50 714
51 586
52 330
53 -54
54 -566

List of values

[1, 2, 2, 1, 2, 1, -8, 0, 0, -8, -31, -4, 5, -4, -31, -74, -10, 22, 22, -10, -74, -143, -18, 57, 82, 57, -18, -143, -244, -28, 116, 188, 188, 116, -28, -244, -383, -40, 205, 352, 401, 352, 205, -40, -383, -566, -54, 330, 586, 714, 714, 586, 330, -54, -566]