A342268 - cp's OEIS frontend

A342268 Irregular triangle read by rows: Take a regular (2n)-sided polygon (n>=2) with all diagonals drawn, as in A007678. Then T(n,k) = (1/(2n))*(number of k-sided polygons in that figure) for k = 3, 4, ..., max_k.

n	a(n)
2	1
3	3
4	1
5	7
6	3
7	12
8	9
9	1
10	23
11	14
12	34
13	27
14	7
15	53
16	42
17	8
18	3
19	78
20	53
21	4
22	1
23	1
24	110
25	79
26	29
27	6
28	0
29	1
30	136
31	130
32	37
33	3
34	2
35	3
36	184
37	154
38	35
39	3
40	184
41	154
42	35
43	3
44	297
45	273
46	76
47	34
48	4
49	1
50	389
51	264
52	48
53	15
54	449
55	403
56	153
57	46
58	7
59	547
60	497
61	163
62	69
63	9
64	3
65	679
66	519
67	207
68	59
69	5
70	2
71	759
72	717
73	268
74	71
75	22
76	5

[1, 3, 1, 7, 3, 12, 9, 1, 23, 14, 34, 27, 7, 53, 42, 8, 3, 78, 53, 4, 1, 1, 110, 79, 29, 6, 0, 1, 136, 130, 37, 3, 2, 3, 184, 154, 35, 3, 184, 154, 35, 3, 297, 273, 76, 34, 4, 1, 389, 264, 48, 15, 449, 403, 153, 46, 7, 547, 497, 163, 69, 9, 3, 679, 519, 207, 59, 5, 2, 759, 717, 268, 71, 22, 5]

cp's OEIS Frontend

A342268 Irregular triangle read by rows: Take a regular (2n)-sided polygon (n>=2) with all diagonals drawn, as in A007678. Then T(n,k) = (1/(2n))*(number of k-sided polygons in that figure) for k = 3, 4, ..., max_k.

Table of values

List of values

n	a(n)
2	1
3	3
4	1
5	7
6	3
7	12
8	9
9	1
10	23
11	14
12	34
13	27
14	7
15	53
16	42
17	8
18	3
19	78
20	53
21	4
22	1
23	1
24	110
25	79
26	29
27	6
28	0
29	1
30	136
31	130
32	37
33	3
34	2
35	3
36	184
37	154
38	35
39	3
40	184
41	154
42	35
43	3
44	297
45	273
46	76
47	34
48	4
49	1
50	389
51	264
52	48
53	15
54	449
55	403
56	153
57	46
58	7
59	547
60	497
61	163
62	69
63	9
64	3
65	679
66	519
67	207
68	59
69	5
70	2
71	759
72	717
73	268
74	71
75	22
76	5

n	a(n)
2	1
3	3
4	1
5	7
6	3
7	12
8	9
9	1
10	23
11	14
12	34
13	27
14	7
15	53
16	42
17	8
18	3
19	78
20	53
21	4
22	1
23	1
24	110
25	79
26	29
27	6
28	0
29	1
30	136
31	130
32	37
33	3
34	2
35	3
36	184
37	154
38	35
39	3
40	184
41	154
42	35
43	3
44	297
45	273
46	76
47	34
48	4
49	1
50	389
51	264
52	48
53	15
54	449
55	403
56	153
57	46
58	7
59	547
60	497
61	163
62	69
63	9
64	3
65	679
66	519
67	207
68	59
69	5
70	2
71	759
72	717
73	268
74	71
75	22
76	5

cp's OEIS Frontend

A342268 Irregular triangle read by rows: Take a regular (2*n)-sided polygon (n>=2) with all diagonals drawn, as in A007678. Then T(n,k) = (1/(2*n))*(number of k-sided polygons in that figure) for k = 3, 4, ..., max_k.

Table of values

List of values

A342268 Irregular triangle read by rows: Take a regular (2n)-sided polygon (n>=2) with all diagonals drawn, as in A007678. Then T(n,k) = (1/(2n))*(number of k-sided polygons in that figure) for k = 3, 4, ..., max_k.

n	a(n)
2	1
3	3
4	1
5	7
6	3
7	12
8	9
9	1
10	23
11	14
12	34
13	27
14	7
15	53
16	42
17	8
18	3
19	78
20	53
21	4
22	1
23	1
24	110
25	79
26	29
27	6
28	0
29	1
30	136
31	130
32	37
33	3
34	2
35	3
36	184
37	154
38	35
39	3
40	184
41	154
42	35
43	3
44	297
45	273
46	76
47	34
48	4
49	1
50	389
51	264
52	48
53	15
54	449
55	403
56	153
57	46
58	7
59	547
60	497
61	163
62	69
63	9
64	3
65	679
66	519
67	207
68	59
69	5
70	2
71	759
72	717
73	268
74	71
75	22
76	5