A300001 - cp's OEIS frontend

A300001 Side length of the smallest equilateral triangle that can be dissected into n equilateral triangles with integer sides, or 0 if no such triangle exists.

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	3
7	4
8	4
9	3
10	4
11	5
12	6
13	4
14	5
15	6
16	4
17	5
18	6
19	5
20	6
21	6
22	5
23	7
24	6
25	5
26	7
27	6
28	6
29	7
30	6
31	7
32	7
33	6
34	7
35	7
36	6
37	7
38	7
39	8
40	7
41	7
42	8
43	7
44	8
45	8
46	7
47	8
48	8
49	7
50	8
51	9
52	8
53	8
54	9
55	8
56	8
57	9
58	8
59	9
60	9
61	8
62	9
63	9
64	8
65	9
66	9
67	9
68	10
69	9
70	9
71	10
72	9
73	9
74	10
75	9
76	10
77	10
78	9
79	10
80	10
81	9
82	10
83	10
84	10
85	10
86	10
87	11
88	10
89	10
90	11
91	10
92	10
93	11
94	10
95	11
96	11
97	10
98	11
99	11
100	10

[1, 0, 0, 2, 0, 3, 4, 4, 3, 4, 5, 6, 4, 5, 6, 4, 5, 6, 5, 6, 6, 5, 7, 6, 5, 7, 6, 6, 7, 6, 7, 7, 6, 7, 7, 6, 7, 7, 8, 7, 7, 8, 7, 8, 8, 7, 8, 8, 7, 8, 9, 8, 8, 9, 8, 8, 9, 8, 9, 9, 8, 9, 9, 8, 9, 9, 9, 10, 9, 9, 10, 9, 9, 10, 9, 10, 10, 9, 10, 10, 9, 10, 10, 10, 10, 10, 11, 10, 10, 11, 10, 10, 11, 10, 11, 11, 10, 11, 11, 10]

cp's OEIS Frontend

A300001 Side length of the smallest equilateral triangle that can be dissected into n equilateral triangles with integer sides, or 0 if no such triangle exists.

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	3
7	4
8	4
9	3
10	4
11	5
12	6
13	4
14	5
15	6
16	4
17	5
18	6
19	5
20	6
21	6
22	5
23	7
24	6
25	5
26	7
27	6
28	6
29	7
30	6
31	7
32	7
33	6
34	7
35	7
36	6
37	7
38	7
39	8
40	7
41	7
42	8
43	7
44	8
45	8
46	7
47	8
48	8
49	7
50	8
51	9
52	8
53	8
54	9
55	8
56	8
57	9
58	8
59	9
60	9
61	8
62	9
63	9
64	8
65	9
66	9
67	9
68	10
69	9
70	9
71	10
72	9
73	9
74	10
75	9
76	10
77	10
78	9
79	10
80	10
81	9
82	10
83	10
84	10
85	10
86	10
87	11
88	10
89	10
90	11
91	10
92	10
93	11
94	10
95	11
96	11
97	10
98	11
99	11
100	10

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	3
7	4
8	4
9	3
10	4
11	5
12	6
13	4
14	5
15	6
16	4
17	5
18	6
19	5
20	6
21	6
22	5
23	7
24	6
25	5
26	7
27	6
28	6
29	7
30	6
31	7
32	7
33	6
34	7
35	7
36	6
37	7
38	7
39	8
40	7
41	7
42	8
43	7
44	8
45	8
46	7
47	8
48	8
49	7
50	8
51	9
52	8
53	8
54	9
55	8
56	8
57	9
58	8
59	9
60	9
61	8
62	9
63	9
64	8
65	9
66	9
67	9
68	10
69	9
70	9
71	10
72	9
73	9
74	10
75	9
76	10
77	10
78	9
79	10
80	10
81	9
82	10
83	10
84	10
85	10
86	10
87	11
88	10
89	10
90	11
91	10
92	10
93	11
94	10
95	11
96	11
97	10
98	11
99	11
100	10

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	3
7	4
8	4
9	3
10	4
11	5
12	6
13	4
14	5
15	6
16	4
17	5
18	6
19	5
20	6
21	6
22	5
23	7
24	6
25	5
26	7
27	6
28	6
29	7
30	6
31	7
32	7
33	6
34	7
35	7
36	6
37	7
38	7
39	8
40	7
41	7
42	8
43	7
44	8
45	8
46	7
47	8
48	8
49	7
50	8
51	9
52	8
53	8
54	9
55	8
56	8
57	9
58	8
59	9
60	9
61	8
62	9
63	9
64	8
65	9
66	9
67	9
68	10
69	9
70	9
71	10
72	9
73	9
74	10
75	9
76	10
77	10
78	9
79	10
80	10
81	9
82	10
83	10
84	10
85	10
86	10
87	11
88	10
89	10
90	11
91	10
92	10
93	11
94	10
95	11
96	11
97	10
98	11
99	11
100	10