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.

A144945 Number of ways to place 2 queens on an n X n chessboard so that they attack each other.

Table of values

n a(n)
1 0
2 6
3 28
4 76
5 160
6 290
7 476
8 728
9 1056
10 1470
11 1980
12 2596
13 3328
14 4186
15 5180
16 6320
17 7616
18 9078
19 10716
20 12540
21 14560
22 16786
23 19228
24 21896
25 24800
26 27950
27 31356
28 35028
29 38976
30 43210
31 47740
32 52576
33 57728
34 63206
35 69020
36 75180
37 81696
38 88578
39 95836
40 103480
41 111520

List of values

[0, 6, 28, 76, 160, 290, 476, 728, 1056, 1470, 1980, 2596, 3328, 4186, 5180, 6320, 7616, 9078, 10716, 12540, 14560, 16786, 19228, 21896, 24800, 27950, 31356, 35028, 38976, 43210, 47740, 52576, 57728, 63206, 69020, 75180, 81696, 88578, 95836, 103480, 111520]