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.

A194493 Number of ways to arrange 3 nonattacking queens on the lower triangle of an n X n board.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 12
6 82
7 330
8 1008
9 2566
10 5742
11 11652
12 21926
13 38802
14 65322
15 105428
16 164214
17 248022
18 364764
19 523998
20 737334
21 1018488
22 1383768
23 1852104
24 2445628
25 3189660
26 4113396
27 5249848
28 6636636
29 8315880
30 10335110
31 12747090
32 15610860
33 18991490

List of values

[0, 0, 0, 0, 12, 82, 330, 1008, 2566, 5742, 11652, 21926, 38802, 65322, 105428, 164214, 248022, 364764, 523998, 737334, 1018488, 1383768, 1852104, 2445628, 3189660, 4113396, 5249848, 6636636, 8315880, 10335110, 12747090, 15610860, 18991490]