A116513 - cp's OEIS frontend

A116513 Number of distinct hexagons of n points chosen from triangular lattice A_2 with sides parallel to the principal axes of that lattice. Degenerate sides (of length 1) are permitted.

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	3
7	3
8	3
9	4
10	4
11	3
12	5
13	4
14	5
15	6
16	5
17	4
18	7
19	6
20	6
21	7
22	6
23	6
24	9
25	7
26	7
27	8
28	8
29	8
30	10
31	6
32	8
33	11
34	10
35	9
36	12
37	7
38	10
39	12
40	10
41	8
42	13
43	11
44	12
45	13
46	10
47	10
48	15
49	12
50	13
51	12
52	12
53	12
54	18
55	11
56	13
57	15
58	12
59	14
60	18
61	13
62	14
63	18

[1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 3, 5, 4, 5, 6, 5, 4, 7, 6, 6, 7, 6, 6, 9, 7, 7, 8, 8, 8, 10, 6, 8, 11, 10, 9, 12, 7, 10, 12, 10, 8, 13, 11, 12, 13, 10, 10, 15, 12, 13, 12, 12, 12, 18, 11, 13, 15, 12, 14, 18, 13, 14, 18]

cp's OEIS Frontend

A116513 Number of distinct hexagons of n points chosen from triangular lattice A_2 with sides parallel to the principal axes of that lattice. Degenerate sides (of length 1) are permitted.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	3
7	3
8	3
9	4
10	4
11	3
12	5
13	4
14	5
15	6
16	5
17	4
18	7
19	6
20	6
21	7
22	6
23	6
24	9
25	7
26	7
27	8
28	8
29	8
30	10
31	6
32	8
33	11
34	10
35	9
36	12
37	7
38	10
39	12
40	10
41	8
42	13
43	11
44	12
45	13
46	10
47	10
48	15
49	12
50	13
51	12
52	12
53	12
54	18
55	11
56	13
57	15
58	12
59	14
60	18
61	13
62	14
63	18

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	3
7	3
8	3
9	4
10	4
11	3
12	5
13	4
14	5
15	6
16	5
17	4
18	7
19	6
20	6
21	7
22	6
23	6
24	9
25	7
26	7
27	8
28	8
29	8
30	10
31	6
32	8
33	11
34	10
35	9
36	12
37	7
38	10
39	12
40	10
41	8
42	13
43	11
44	12
45	13
46	10
47	10
48	15
49	12
50	13
51	12
52	12
53	12
54	18
55	11
56	13
57	15
58	12
59	14
60	18
61	13
62	14
63	18

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	3
7	3
8	3
9	4
10	4
11	3
12	5
13	4
14	5
15	6
16	5
17	4
18	7
19	6
20	6
21	7
22	6
23	6
24	9
25	7
26	7
27	8
28	8
29	8
30	10
31	6
32	8
33	11
34	10
35	9
36	12
37	7
38	10
39	12
40	10
41	8
42	13
43	11
44	12
45	13
46	10
47	10
48	15
49	12
50	13
51	12
52	12
53	12
54	18
55	11
56	13
57	15
58	12
59	14
60	18
61	13
62	14
63	18