A193406 - cp's OEIS frontend

A193406 The Matula numbers of the rooted trees that have no perfect matchings.

n	a(n)
1	1
2	3
3	4
4	7
5	8
6	9
7	10
8	11
9	12
10	13
11	14
12	16
13	17
14	19
15	20
16	21
17	24
18	25
19	27
20	28
21	29
22	30
23	32
24	33
25	34
26	35
27	36
28	37
29	38
30	39
31	40
32	42
33	43
34	44
35	46
36	47
37	48
38	49
39	50
40	51
41	52
42	53
43	56
44	57
45	58
46	59
47	60
48	61
49	62
50	63
51	64
52	67
53	68
54	70
55	71
56	72
57	73
58	74
59	75
60	76
61	77
62	79
63	80
64	81
65	82
66	83
67	84
68	85
69	86
70	87
71	88
72	89
73	90
74	91
75	92
76	95
77	96
78	97
79	98
80	99
81	100

[1, 3, 4, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 19, 20, 21, 24, 25, 27, 28, 29, 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 56, 57, 58, 59, 60, 61, 62, 63, 64, 67, 68, 70, 71, 72, 73, 74, 75, 76, 77, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 95, 96, 97, 98, 99, 100]

cp's OEIS Frontend

A193406 The Matula numbers of the rooted trees that have no perfect matchings.

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	7
5	8
6	9
7	10
8	11
9	12
10	13
11	14
12	16
13	17
14	19
15	20
16	21
17	24
18	25
19	27
20	28
21	29
22	30
23	32
24	33
25	34
26	35
27	36
28	37
29	38
30	39
31	40
32	42
33	43
34	44
35	46
36	47
37	48
38	49
39	50
40	51
41	52
42	53
43	56
44	57
45	58
46	59
47	60
48	61
49	62
50	63
51	64
52	67
53	68
54	70
55	71
56	72
57	73
58	74
59	75
60	76
61	77
62	79
63	80
64	81
65	82
66	83
67	84
68	85
69	86
70	87
71	88
72	89
73	90
74	91
75	92
76	95
77	96
78	97
79	98
80	99
81	100

n	a(n)
1	1
2	3
3	4
4	7
5	8
6	9
7	10
8	11
9	12
10	13
11	14
12	16
13	17
14	19
15	20
16	21
17	24
18	25
19	27
20	28
21	29
22	30
23	32
24	33
25	34
26	35
27	36
28	37
29	38
30	39
31	40
32	42
33	43
34	44
35	46
36	47
37	48
38	49
39	50
40	51
41	52
42	53
43	56
44	57
45	58
46	59
47	60
48	61
49	62
50	63
51	64
52	67
53	68
54	70
55	71
56	72
57	73
58	74
59	75
60	76
61	77
62	79
63	80
64	81
65	82
66	83
67	84
68	85
69	86
70	87
71	88
72	89
73	90
74	91
75	92
76	95
77	96
78	97
79	98
80	99
81	100

n	a(n)
1	1
2	3
3	4
4	7
5	8
6	9
7	10
8	11
9	12
10	13
11	14
12	16
13	17
14	19
15	20
16	21
17	24
18	25
19	27
20	28
21	29
22	30
23	32
24	33
25	34
26	35
27	36
28	37
29	38
30	39
31	40
32	42
33	43
34	44
35	46
36	47
37	48
38	49
39	50
40	51
41	52
42	53
43	56
44	57
45	58
46	59
47	60
48	61
49	62
50	63
51	64
52	67
53	68
54	70
55	71
56	72
57	73
58	74
59	75
60	76
61	77
62	79
63	80
64	81
65	82
66	83
67	84
68	85
69	86
70	87
71	88
72	89
73	90
74	91
75	92
76	95
77	96
78	97
79	98
80	99
81	100