A379759 - cp's OEIS frontend

A379759 Minimum number of kings that must be placed on an n X n chessboard such that each square is attacked or occupied by at least three kings.

n	a(n)
2	3
3	5
4	12
5	12
6	16
7	27
8	27
9	33
10	48
11	48
12	56
13	75
14	75
15	85
16	108
17	108
18	120
19	147
20	147
21	161
22	192
23	192
24	208
25	243
26	243
27	261
28	300
29	300
30	320
31	363
32	363
33	385
34	432
35	432
36	456
37	507
38	507
39	533
40	588
41	588
42	616
43	675
44	675
45	705
46	768
47	768
48	800
49	867
50	867
51	901
52	972
53	972
54	1008
55	1083
56	1083

[3, 5, 12, 12, 16, 27, 27, 33, 48, 48, 56, 75, 75, 85, 108, 108, 120, 147, 147, 161, 192, 192, 208, 243, 243, 261, 300, 300, 320, 363, 363, 385, 432, 432, 456, 507, 507, 533, 588, 588, 616, 675, 675, 705, 768, 768, 800, 867, 867, 901, 972, 972, 1008, 1083, 1083]

cp's OEIS Frontend

A379759 Minimum number of kings that must be placed on an n X n chessboard such that each square is attacked or occupied by at least three kings.

Table of values

List of values