A372175 - cp's OEIS frontend

A372175 Irregular triangle read by rows where T(n,k) is the number of labeled simple graphs covering n vertices with exactly 2k directed cycles of length > 2.

n	a(n)
0	1
1	0
2	1
3	3
4	1
5	19
6	15
7	0
8	6
9	0
10	0
11	0
12	1
13	155
14	232
15	15
16	190
17	0
18	0
19	70
20	50
21	0
22	0
23	0
24	0
25	30
26	15
27	0
28	0
29	0
30	0
31	0
32	0
33	0
34	0
35	10
36	0
37	0
38	0
39	0
40	0
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	0
49	0
50	1

[1, 0, 1, 3, 1, 19, 15, 0, 6, 0, 0, 0, 1, 155, 232, 15, 190, 0, 0, 70, 50, 0, 0, 0, 0, 30, 15, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]

cp's OEIS Frontend

A372175 Irregular triangle read by rows where T(n,k) is the number of labeled simple graphs covering n vertices with exactly 2k directed cycles of length > 2.

Table of values

List of values

n	a(n)
0	1
1	0
2	1
3	3
4	1
5	19
6	15
7	0
8	6
9	0
10	0
11	0
12	1
13	155
14	232
15	15
16	190
17	0
18	0
19	70
20	50
21	0
22	0
23	0
24	0
25	30
26	15
27	0
28	0
29	0
30	0
31	0
32	0
33	0
34	0
35	10
36	0
37	0
38	0
39	0
40	0
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	0
49	0
50	1

n	a(n)
0	1
1	0
2	1
3	3
4	1
5	19
6	15
7	0
8	6
9	0
10	0
11	0
12	1
13	155
14	232
15	15
16	190
17	0
18	0
19	70
20	50
21	0
22	0
23	0
24	0
25	30
26	15
27	0
28	0
29	0
30	0
31	0
32	0
33	0
34	0
35	10
36	0
37	0
38	0
39	0
40	0
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	0
49	0
50	1

n	a(n)
0	1
1	0
2	1
3	3
4	1
5	19
6	15
7	0
8	6
9	0
10	0
11	0
12	1
13	155
14	232
15	15
16	190
17	0
18	0
19	70
20	50
21	0
22	0
23	0
24	0
25	30
26	15
27	0
28	0
29	0
30	0
31	0
32	0
33	0
34	0
35	10
36	0
37	0
38	0
39	0
40	0
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	0
49	0
50	1