A007149 - cp's OEIS frontend

A007149 2-part of number of graphs on n nodes.

n	a(n)
0	0
1	0
2	1
3	2
4	0
5	1
6	2
7	2
8	1
9	2
10	4
11	3
12	4
13	4
14	5
15	5
16	4
17	5
18	8
19	6
20	8
21	7
22	8
23	8
24	9
25	9
26	10
27	10
28	15
29	11
30	12
31	12
32	11
33	12
34	16
35	13
36	16
37	14
38	15
39	15
40	17
41	16
42	17
43	17
44	19
45	18
46	19
47	19
48	20
49	20
50	21
51	21
52	23
53	22
54	23
55	23
56	25
57	24
58	25
59	25
60	27
61	26
62	27
63	27
64	26
65	27
66	31
67	28
68	32
69	29
70	30
71	30
72	35
73	31
74	32
75	32
76	34
77	33
78	34
79	34
80	36
81	35
82	36
83	36
84	38
85	37
86	38
87	38

[0, 0, 1, 2, 0, 1, 2, 2, 1, 2, 4, 3, 4, 4, 5, 5, 4, 5, 8, 6, 8, 7, 8, 8, 9, 9, 10, 10, 15, 11, 12, 12, 11, 12, 16, 13, 16, 14, 15, 15, 17, 16, 17, 17, 19, 18, 19, 19, 20, 20, 21, 21, 23, 22, 23, 23, 25, 24, 25, 25, 27, 26, 27, 27, 26, 27, 31, 28, 32, 29, 30, 30, 35, 31, 32, 32, 34, 33, 34, 34, 36, 35, 36, 36, 38, 37, 38, 38]

cp's OEIS Frontend

A007149 2-part of number of graphs on n nodes.

Table of values

List of values

n	a(n)
0	0
1	0
2	1
3	2
4	0
5	1
6	2
7	2
8	1
9	2
10	4
11	3
12	4
13	4
14	5
15	5
16	4
17	5
18	8
19	6
20	8
21	7
22	8
23	8
24	9
25	9
26	10
27	10
28	15
29	11
30	12
31	12
32	11
33	12
34	16
35	13
36	16
37	14
38	15
39	15
40	17
41	16
42	17
43	17
44	19
45	18
46	19
47	19
48	20
49	20
50	21
51	21
52	23
53	22
54	23
55	23
56	25
57	24
58	25
59	25
60	27
61	26
62	27
63	27
64	26
65	27
66	31
67	28
68	32
69	29
70	30
71	30
72	35
73	31
74	32
75	32
76	34
77	33
78	34
79	34
80	36
81	35
82	36
83	36
84	38
85	37
86	38
87	38

n	a(n)
0	0
1	0
2	1
3	2
4	0
5	1
6	2
7	2
8	1
9	2
10	4
11	3
12	4
13	4
14	5
15	5
16	4
17	5
18	8
19	6
20	8
21	7
22	8
23	8
24	9
25	9
26	10
27	10
28	15
29	11
30	12
31	12
32	11
33	12
34	16
35	13
36	16
37	14
38	15
39	15
40	17
41	16
42	17
43	17
44	19
45	18
46	19
47	19
48	20
49	20
50	21
51	21
52	23
53	22
54	23
55	23
56	25
57	24
58	25
59	25
60	27
61	26
62	27
63	27
64	26
65	27
66	31
67	28
68	32
69	29
70	30
71	30
72	35
73	31
74	32
75	32
76	34
77	33
78	34
79	34
80	36
81	35
82	36
83	36
84	38
85	37
86	38
87	38

n	a(n)
0	0
1	0
2	1
3	2
4	0
5	1
6	2
7	2
8	1
9	2
10	4
11	3
12	4
13	4
14	5
15	5
16	4
17	5
18	8
19	6
20	8
21	7
22	8
23	8
24	9
25	9
26	10
27	10
28	15
29	11
30	12
31	12
32	11
33	12
34	16
35	13
36	16
37	14
38	15
39	15
40	17
41	16
42	17
43	17
44	19
45	18
46	19
47	19
48	20
49	20
50	21
51	21
52	23
53	22
54	23
55	23
56	25
57	24
58	25
59	25
60	27
61	26
62	27
63	27
64	26
65	27
66	31
67	28
68	32
69	29
70	30
71	30
72	35
73	31
74	32
75	32
76	34
77	33
78	34
79	34
80	36
81	35
82	36
83	36
84	38
85	37
86	38
87	38