A331428 - cp's OEIS frontend

A331428 Divide each side of a triangle into 2*n-1 (n>=1) equal parts and trace the corresponding cevians, i.e., join every point, except for the first and last ones, with the opposite vertex. a(n) is the number of points at which three cevians meet.

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

[0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 0, 0, 0, 42, 0, 0, 0, 0, 12, 0, 0, 0, 48, 6, 0, 0, 0, 0, 6, 12, 0, 0, 0, 6, 0, 0, 12, 0, 0, 0, 24, 0, 0, 90, 0, 0, 0, 0, 0, 12, 12, 0, 0, 0, 0, 0, 0, 0, 66, 0, 0, 0, 24, 0, 0, 0, 0, 12, 0, 0, 0, 12, 0]

cp's OEIS Frontend

A331428 Divide each side of a triangle into 2*n-1 (n>=1) equal parts and trace the corresponding cevians, i.e., join every point, except for the first and last ones, with the opposite vertex. a(n) is the number of points at which three cevians meet.

Table of values

List of values

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

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

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