A278427 - cp's OEIS frontend

A278427 Triangle read by rows: CU(n,k) is the number of unlabeled subgraphs with k edges of the n-cycle C_n.

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

[1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 4, 3, 3, 1, 1, 5, 4, 5, 3, 1, 1, 6, 5, 7, 6, 4, 1, 1, 7, 6, 9, 9, 8, 4, 1, 1, 8, 7, 11, 12, 13, 9, 5, 1, 1, 9, 8, 13, 15, 18, 15, 12, 5, 1, 1, 10, 9, 15, 18, 23, 22, 21, 13, 6, 1, 1, 11, 10, 17, 21, 28, 29, 31, 24, 16, 6, 1, 1]

cp's OEIS Frontend

A278427 Triangle read by rows: CU(n,k) is the number of unlabeled subgraphs with k edges of the n-cycle C_n.

Table of values

List of values

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

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

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