A379726 - cp's OEIS frontend

A379726 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 two kings.

n	a(n)
2	2
3	3
4	8
5	8
6	10
7	18
8	18
9	21
10	32
11	32
12	36
13	50
14	50
15	55
16	72
17	72
18	78
19	98
20	98
21	105
22	128
23	128
24	136
25	162
26	162
27	171
28	200
29	200
30	210
31	242
32	242
33	253
34	288
35	288
36	300
37	338
38	338
39	351
40	392
41	392
42	406
43	450
44	450
45	465
46	512
47	512
48	528
49	578
50	578
51	595
52	648
53	648
54	666
55	722
56	722
57	741
58	800
59	800
60	820
61	882
62	882
63	903
64	968
65	968
66	990
67	1058
68	1058
69	1081
70	1152
71	1152
72	1176
73	1250
74	1250
75	1275
76	1352
77	1352
78	1378
79	1458
80	1458
81	1485
82	1568
83	1568
84	1596
85	1682
86	1682
87	1711
88	1800
89	1800
90	1830
91	1922
92	1922
93	1953
94	2048
95	2048
96	2080
97	2178
98	2178
99	2211
100	2312

[2, 3, 8, 8, 10, 18, 18, 21, 32, 32, 36, 50, 50, 55, 72, 72, 78, 98, 98, 105, 128, 128, 136, 162, 162, 171, 200, 200, 210, 242, 242, 253, 288, 288, 300, 338, 338, 351, 392, 392, 406, 450, 450, 465, 512, 512, 528, 578, 578, 595, 648, 648, 666, 722, 722, 741, 800, 800, 820, 882, 882, 903, 968, 968, 990, 1058, 1058, 1081, 1152, 1152, 1176, 1250, 1250, 1275, 1352, 1352, 1378, 1458, 1458, 1485, 1568, 1568, 1596, 1682, 1682, 1711, 1800, 1800, 1830, 1922, 1922, 1953, 2048, 2048, 2080, 2178, 2178, 2211, 2312]

cp's OEIS Frontend

A379726 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 two kings.

Table of values

List of values