A328793 - cp's OEIS frontend

A328793 Least k such that there exists an equilateral triangle of side length sqrt(A003136(n)) with vertices in an equilateral triangular array of points with k rows.

n	a(n)
1	2
2	4
3	3
4	5
5	4
6	7
7	6
8	5
9	8
10	7
11	6
12	10
13	9
14	8
15	7
16	11
17	10
18	9
19	13
20	8
21	11
22	10
23	14
24	13
25	9
26	12
27	11
28	16
29	15
30	14
31	10
32	13
33	12
34	16
35	15
36	11
37	14
38	19
39	18
40	13
41	17
42	16
43	12
44	15
45	20
46	19
47	14
48	17
49	13
50	16
51	21
52	20
53	19
54	15
55	18
56	14
57	22
58	17
59	21
60	20
61	16
62	19
63	25
64	24
65	15
66	18
67	22
68	21
69	17

[2, 4, 3, 5, 4, 7, 6, 5, 8, 7, 6, 10, 9, 8, 7, 11, 10, 9, 13, 8, 11, 10, 14, 13, 9, 12, 11, 16, 15, 14, 10, 13, 12, 16, 15, 11, 14, 19, 18, 13, 17, 16, 12, 15, 20, 19, 14, 17, 13, 16, 21, 20, 19, 15, 18, 14, 22, 17, 21, 20, 16, 19, 25, 24, 15, 18, 22, 21, 17]

cp's OEIS Frontend

A328793 Least k such that there exists an equilateral triangle of side length sqrt(A003136(n)) with vertices in an equilateral triangular array of points with k rows.

Table of values

List of values

n	a(n)
1	2
2	4
3	3
4	5
5	4
6	7
7	6
8	5
9	8
10	7
11	6
12	10
13	9
14	8
15	7
16	11
17	10
18	9
19	13
20	8
21	11
22	10
23	14
24	13
25	9
26	12
27	11
28	16
29	15
30	14
31	10
32	13
33	12
34	16
35	15
36	11
37	14
38	19
39	18
40	13
41	17
42	16
43	12
44	15
45	20
46	19
47	14
48	17
49	13
50	16
51	21
52	20
53	19
54	15
55	18
56	14
57	22
58	17
59	21
60	20
61	16
62	19
63	25
64	24
65	15
66	18
67	22
68	21
69	17

n	a(n)
1	2
2	4
3	3
4	5
5	4
6	7
7	6
8	5
9	8
10	7
11	6
12	10
13	9
14	8
15	7
16	11
17	10
18	9
19	13
20	8
21	11
22	10
23	14
24	13
25	9
26	12
27	11
28	16
29	15
30	14
31	10
32	13
33	12
34	16
35	15
36	11
37	14
38	19
39	18
40	13
41	17
42	16
43	12
44	15
45	20
46	19
47	14
48	17
49	13
50	16
51	21
52	20
53	19
54	15
55	18
56	14
57	22
58	17
59	21
60	20
61	16
62	19
63	25
64	24
65	15
66	18
67	22
68	21
69	17

n	a(n)
1	2
2	4
3	3
4	5
5	4
6	7
7	6
8	5
9	8
10	7
11	6
12	10
13	9
14	8
15	7
16	11
17	10
18	9
19	13
20	8
21	11
22	10
23	14
24	13
25	9
26	12
27	11
28	16
29	15
30	14
31	10
32	13
33	12
34	16
35	15
36	11
37	14
38	19
39	18
40	13
41	17
42	16
43	12
44	15
45	20
46	19
47	14
48	17
49	13
50	16
51	21
52	20
53	19
54	15
55	18
56	14
57	22
58	17
59	21
60	20
61	16
62	19
63	25
64	24
65	15
66	18
67	22
68	21
69	17