A342557 - cp's OEIS frontend

A342557 T(n,m) is the number of unlabeled connected graphs without endpoints on m nodes with n edges, where T(n,m), m <= n, is a triangle read by rows.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	0
13	0
14	1
15	1
16	0
17	0
18	0
19	1
20	3
21	1
22	0
23	0
24	0
25	0
26	3
27	5
28	1
29	0
30	0
31	0
32	0
33	2
34	11
35	8
36	1
37	0
38	0
39	0
40	0
41	1
42	15
43	31
44	12
45	1
46	0
47	0
48	0
49	0
50	1
51	12
52	63
53	71
54	16
55	1
56	0
57	0
58	0
59	0
60	0
61	8
62	89
63	231
64	144
65	21
66	1
67	0
68	0
69	0
70	0
71	0
72	5
73	97
74	513
75	707
76	274
77	27
78	1

[0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 3, 1, 0, 0, 0, 0, 3, 5, 1, 0, 0, 0, 0, 2, 11, 8, 1, 0, 0, 0, 0, 1, 15, 31, 12, 1, 0, 0, 0, 0, 1, 12, 63, 71, 16, 1, 0, 0, 0, 0, 0, 8, 89, 231, 144, 21, 1, 0, 0, 0, 0, 0, 5, 97, 513, 707, 274, 27, 1]

cp's OEIS Frontend

A342557 T(n,m) is the number of unlabeled connected graphs without endpoints on m nodes with n edges, where T(n,m), m <= n, is a triangle read by rows.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	0
13	0
14	1
15	1
16	0
17	0
18	0
19	1
20	3
21	1
22	0
23	0
24	0
25	0
26	3
27	5
28	1
29	0
30	0
31	0
32	0
33	2
34	11
35	8
36	1
37	0
38	0
39	0
40	0
41	1
42	15
43	31
44	12
45	1
46	0
47	0
48	0
49	0
50	1
51	12
52	63
53	71
54	16
55	1
56	0
57	0
58	0
59	0
60	0
61	8
62	89
63	231
64	144
65	21
66	1
67	0
68	0
69	0
70	0
71	0
72	5
73	97
74	513
75	707
76	274
77	27
78	1

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	0
13	0
14	1
15	1
16	0
17	0
18	0
19	1
20	3
21	1
22	0
23	0
24	0
25	0
26	3
27	5
28	1
29	0
30	0
31	0
32	0
33	2
34	11
35	8
36	1
37	0
38	0
39	0
40	0
41	1
42	15
43	31
44	12
45	1
46	0
47	0
48	0
49	0
50	1
51	12
52	63
53	71
54	16
55	1
56	0
57	0
58	0
59	0
60	0
61	8
62	89
63	231
64	144
65	21
66	1
67	0
68	0
69	0
70	0
71	0
72	5
73	97
74	513
75	707
76	274
77	27
78	1

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	0
13	0
14	1
15	1
16	0
17	0
18	0
19	1
20	3
21	1
22	0
23	0
24	0
25	0
26	3
27	5
28	1
29	0
30	0
31	0
32	0
33	2
34	11
35	8
36	1
37	0
38	0
39	0
40	0
41	1
42	15
43	31
44	12
45	1
46	0
47	0
48	0
49	0
50	1
51	12
52	63
53	71
54	16
55	1
56	0
57	0
58	0
59	0
60	0
61	8
62	89
63	231
64	144
65	21
66	1
67	0
68	0
69	0
70	0
71	0
72	5
73	97
74	513
75	707
76	274
77	27
78	1