A006984 - cp's OEIS frontend

A006984 Greatest minimal norm of sublattice of index n in hexagonal lattice.

n	a(n)
1	1
2	1
3	3
4	4
5	3
6	4
7	7
8	7
9	9
10	7
11	7
12	12
13	13
14	12
15	13
16	16
17	13
18	13
19	19
20	16
21	21
22	19
23	19
24	21
25	25
26	21
27	27
28	28
29	21
30	27
31	31
32	28
33	27
34	28
35	31
36	36
37	37
38	31
39	39
40	37
41	37
42	36
43	43
44	39
45	39
46	39
47	39
48	48
49	49
50	43
51	43

[1, 1, 3, 4, 3, 4, 7, 7, 9, 7, 7, 12, 13, 12, 13, 16, 13, 13, 19, 16, 21, 19, 19, 21, 25, 21, 27, 28, 21, 27, 31, 28, 27, 28, 31, 36, 37, 31, 39, 37, 37, 36, 43, 39, 39, 39, 39, 48, 49, 43, 43]

cp's OEIS Frontend

A006984 Greatest minimal norm of sublattice of index n in hexagonal lattice.

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	4
5	3
6	4
7	7
8	7
9	9
10	7
11	7
12	12
13	13
14	12
15	13
16	16
17	13
18	13
19	19
20	16
21	21
22	19
23	19
24	21
25	25
26	21
27	27
28	28
29	21
30	27
31	31
32	28
33	27
34	28
35	31
36	36
37	37
38	31
39	39
40	37
41	37
42	36
43	43
44	39
45	39
46	39
47	39
48	48
49	49
50	43
51	43

n	a(n)
1	1
2	1
3	3
4	4
5	3
6	4
7	7
8	7
9	9
10	7
11	7
12	12
13	13
14	12
15	13
16	16
17	13
18	13
19	19
20	16
21	21
22	19
23	19
24	21
25	25
26	21
27	27
28	28
29	21
30	27
31	31
32	28
33	27
34	28
35	31
36	36
37	37
38	31
39	39
40	37
41	37
42	36
43	43
44	39
45	39
46	39
47	39
48	48
49	49
50	43
51	43

n	a(n)
1	1
2	1
3	3
4	4
5	3
6	4
7	7
8	7
9	9
10	7
11	7
12	12
13	13
14	12
15	13
16	16
17	13
18	13
19	19
20	16
21	21
22	19
23	19
24	21
25	25
26	21
27	27
28	28
29	21
30	27
31	31
32	28
33	27
34	28
35	31
36	36
37	37
38	31
39	39
40	37
41	37
42	36
43	43
44	39
45	39
46	39
47	39
48	48
49	49
50	43
51	43