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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.

A178967 Number of ways to place 5 nonattacking amazons (superqueens) on an n X n board.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 248
8 7320
9 82758
10 562384
11 2756122
12 10771928
13 35504296
14 102677536
15 267284836
16 638673432
17 1420555842
18 2974232240
19 5911536526
20 11232560320
21 20516606128
22 36191817440
23 61893239340
24 102950022616
25 167010533830
26 264869097472
27 411497661102
28 627378473416
29 940130628920
30 1386570370640
31 2015178519904
32 2889176379864
33 4090150245318
34 5722507236712
35 7918655437366
36 10845295301648
37 14710646654420
38 19773136732920
39 26351274869008
40 34835414789584

List of values

[0, 0, 0, 0, 0, 0, 248, 7320, 82758, 562384, 2756122, 10771928, 35504296, 102677536, 267284836, 638673432, 1420555842, 2974232240, 5911536526, 11232560320, 20516606128, 36191817440, 61893239340, 102950022616, 167010533830, 264869097472, 411497661102, 627378473416, 940130628920, 1386570370640, 2015178519904, 2889176379864, 4090150245318, 5722507236712, 7918655437366, 10845295301648, 14710646654420, 19773136732920, 26351274869008, 34835414789584]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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