A379766 - cp's OEIS frontend

A379766 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 four kings.

n	a(n)
2	4
3	9
4	16
5	16
6	24
7	36
8	36
9	47
10	64
11	64
12	78
13	100
14	100
15	117
16	144
17	144
18	164
19	196
20	196
21	219
22	256
23	256
24	282
25	324
26	324
27	353
28	400
29	400
30	432
31	484
32	484
33	519
34	576
35	576
36	614
37	676
38	676
39	717
40	784
41	784
42	828
43	900
44	900
45	947
46	1024
47	1024
48	1074
49	1156
50	1156
51	1209
52	1296
53	1296
54	1352

[4, 9, 16, 16, 24, 36, 36, 47, 64, 64, 78, 100, 100, 117, 144, 144, 164, 196, 196, 219, 256, 256, 282, 324, 324, 353, 400, 400, 432, 484, 484, 519, 576, 576, 614, 676, 676, 717, 784, 784, 828, 900, 900, 947, 1024, 1024, 1074, 1156, 1156, 1209, 1296, 1296, 1352]

cp's OEIS Frontend

A379766 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 four kings.

Table of values

List of values