A331423 - cp's OEIS frontend

A331423 Divide each side of a triangle into 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	1
3	0
4	7
5	0
6	13
7	0
8	19
9	0
10	25
11	0
12	31
13	0
14	37
15	6
16	43
17	0
18	49
19	0
20	61
21	0
22	61
23	0
24	91
25	0
26	73
27	0
28	79
29	0
30	91
31	0
32	91
33	0
34	97
35	12
36	103
37	0
38	109
39	0
40	133
41	0
42	133
43	0
44	127
45	42
46	133
47	0
48	187
49	0
50	145
51	0
52	151
53	0
54	157
55	12
56	175
57	0
58	169
59	0
60	235
61	0
62	181
63	48
64	187
65	6
66	205
67	0
68	199
69	0

[0, 1, 0, 7, 0, 13, 0, 19, 0, 25, 0, 31, 0, 37, 6, 43, 0, 49, 0, 61, 0, 61, 0, 91, 0, 73, 0, 79, 0, 91, 0, 91, 0, 97, 12, 103, 0, 109, 0, 133, 0, 133, 0, 127, 42, 133, 0, 187, 0, 145, 0, 151, 0, 157, 12, 175, 0, 169, 0, 235, 0, 181, 48, 187, 6, 205, 0, 199, 0]

cp's OEIS Frontend

A331423 Divide each side of a triangle into 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	1
3	0
4	7
5	0
6	13
7	0
8	19
9	0
10	25
11	0
12	31
13	0
14	37
15	6
16	43
17	0
18	49
19	0
20	61
21	0
22	61
23	0
24	91
25	0
26	73
27	0
28	79
29	0
30	91
31	0
32	91
33	0
34	97
35	12
36	103
37	0
38	109
39	0
40	133
41	0
42	133
43	0
44	127
45	42
46	133
47	0
48	187
49	0
50	145
51	0
52	151
53	0
54	157
55	12
56	175
57	0
58	169
59	0
60	235
61	0
62	181
63	48
64	187
65	6
66	205
67	0
68	199
69	0

n	a(n)
1	0
2	1
3	0
4	7
5	0
6	13
7	0
8	19
9	0
10	25
11	0
12	31
13	0
14	37
15	6
16	43
17	0
18	49
19	0
20	61
21	0
22	61
23	0
24	91
25	0
26	73
27	0
28	79
29	0
30	91
31	0
32	91
33	0
34	97
35	12
36	103
37	0
38	109
39	0
40	133
41	0
42	133
43	0
44	127
45	42
46	133
47	0
48	187
49	0
50	145
51	0
52	151
53	0
54	157
55	12
56	175
57	0
58	169
59	0
60	235
61	0
62	181
63	48
64	187
65	6
66	205
67	0
68	199
69	0

n	a(n)
1	0
2	1
3	0
4	7
5	0
6	13
7	0
8	19
9	0
10	25
11	0
12	31
13	0
14	37
15	6
16	43
17	0
18	49
19	0
20	61
21	0
22	61
23	0
24	91
25	0
26	73
27	0
28	79
29	0
30	91
31	0
32	91
33	0
34	97
35	12
36	103
37	0
38	109
39	0
40	133
41	0
42	133
43	0
44	127
45	42
46	133
47	0
48	187
49	0
50	145
51	0
52	151
53	0
54	157
55	12
56	175
57	0
58	169
59	0
60	235
61	0
62	181
63	48
64	187
65	6
66	205
67	0
68	199
69	0