A168339 - cp's OEIS frontend

A168339 a(n) is the least number of squares needed to form n edge-disjoint 1 X 1 holes inside a rectangle of squares with a solid border.

n	a(n)
1	8
2	13
3	17
4	20
5	20
6	24
7	28
8	27
9	31
10	32
11	34
12	36
13	36
14	40
15	41
16	44
17	46
18	45
19	51
20	50
21	51
22	55
23	54
24	56
25	56
26	62
27	61
28	62
29	67
30	66
31	68
32	67
33	71
34	74
35	73
36	74
37	80
38	79
39	78
40	80
41	80
42	84
43	87
44	86
45	87
46	89
47	93
48	92
49	94
50	93
51	99
52	98
53	100
54	100
55	101
56	104
57	108
58	107
59	106
60	108
61	108
62	114
63	113
64	116
65	115
66	116

[8, 13, 17, 20, 20, 24, 28, 27, 31, 32, 34, 36, 36, 40, 41, 44, 46, 45, 51, 50, 51, 55, 54, 56, 56, 62, 61, 62, 67, 66, 68, 67, 71, 74, 73, 74, 80, 79, 78, 80, 80, 84, 87, 86, 87, 89, 93, 92, 94, 93, 99, 98, 100, 100, 101, 104, 108, 107, 106, 108, 108, 114, 113, 116, 115, 116]

cp's OEIS Frontend

A168339 a(n) is the least number of squares needed to form n edge-disjoint 1 X 1 holes inside a rectangle of squares with a solid border.

Table of values

List of values

n	a(n)
1	8
2	13
3	17
4	20
5	20
6	24
7	28
8	27
9	31
10	32
11	34
12	36
13	36
14	40
15	41
16	44
17	46
18	45
19	51
20	50
21	51
22	55
23	54
24	56
25	56
26	62
27	61
28	62
29	67
30	66
31	68
32	67
33	71
34	74
35	73
36	74
37	80
38	79
39	78
40	80
41	80
42	84
43	87
44	86
45	87
46	89
47	93
48	92
49	94
50	93
51	99
52	98
53	100
54	100
55	101
56	104
57	108
58	107
59	106
60	108
61	108
62	114
63	113
64	116
65	115
66	116

n	a(n)
1	8
2	13
3	17
4	20
5	20
6	24
7	28
8	27
9	31
10	32
11	34
12	36
13	36
14	40
15	41
16	44
17	46
18	45
19	51
20	50
21	51
22	55
23	54
24	56
25	56
26	62
27	61
28	62
29	67
30	66
31	68
32	67
33	71
34	74
35	73
36	74
37	80
38	79
39	78
40	80
41	80
42	84
43	87
44	86
45	87
46	89
47	93
48	92
49	94
50	93
51	99
52	98
53	100
54	100
55	101
56	104
57	108
58	107
59	106
60	108
61	108
62	114
63	113
64	116
65	115
66	116

n	a(n)
1	8
2	13
3	17
4	20
5	20
6	24
7	28
8	27
9	31
10	32
11	34
12	36
13	36
14	40
15	41
16	44
17	46
18	45
19	51
20	50
21	51
22	55
23	54
24	56
25	56
26	62
27	61
28	62
29	67
30	66
31	68
32	67
33	71
34	74
35	73
36	74
37	80
38	79
39	78
40	80
41	80
42	84
43	87
44	86
45	87
46	89
47	93
48	92
49	94
50	93
51	99
52	98
53	100
54	100
55	101
56	104
57	108
58	107
59	106
60	108
61	108
62	114
63	113
64	116
65	115
66	116