A258592 - cp's OEIS frontend

A258592 Values of k such that the number of rooted trees with k nodes (A000081(k)) is even.

n	a(n)
1	0
2	3
3	4
4	6
5	7
6	9
7	11
8	12
9	13
10	19
11	20
12	21
13	24
14	26
15	29
16	31
17	32
18	34
19	36
20	37
21	39
22	41
23	43
24	44
25	45
26	46
27	47
28	48
29	51
30	52
31	53
32	54
33	55
34	57
35	58
36	59
37	60
38	62
39	63
40	66
41	69
42	70
43	72
44	79
45	80
46	81
47	83
48	85
49	86
50	88
51	89
52	90
53	91
54	92
55	94
56	95
57	96
58	97
59	100
60	101
61	102
62	103
63	105
64	106
65	107

[0, 3, 4, 6, 7, 9, 11, 12, 13, 19, 20, 21, 24, 26, 29, 31, 32, 34, 36, 37, 39, 41, 43, 44, 45, 46, 47, 48, 51, 52, 53, 54, 55, 57, 58, 59, 60, 62, 63, 66, 69, 70, 72, 79, 80, 81, 83, 85, 86, 88, 89, 90, 91, 92, 94, 95, 96, 97, 100, 101, 102, 103, 105, 106, 107]

cp's OEIS Frontend

A258592 Values of k such that the number of rooted trees with k nodes (A000081(k)) is even.

Table of values

List of values

n	a(n)
1	0
2	3
3	4
4	6
5	7
6	9
7	11
8	12
9	13
10	19
11	20
12	21
13	24
14	26
15	29
16	31
17	32
18	34
19	36
20	37
21	39
22	41
23	43
24	44
25	45
26	46
27	47
28	48
29	51
30	52
31	53
32	54
33	55
34	57
35	58
36	59
37	60
38	62
39	63
40	66
41	69
42	70
43	72
44	79
45	80
46	81
47	83
48	85
49	86
50	88
51	89
52	90
53	91
54	92
55	94
56	95
57	96
58	97
59	100
60	101
61	102
62	103
63	105
64	106
65	107

n	a(n)
1	0
2	3
3	4
4	6
5	7
6	9
7	11
8	12
9	13
10	19
11	20
12	21
13	24
14	26
15	29
16	31
17	32
18	34
19	36
20	37
21	39
22	41
23	43
24	44
25	45
26	46
27	47
28	48
29	51
30	52
31	53
32	54
33	55
34	57
35	58
36	59
37	60
38	62
39	63
40	66
41	69
42	70
43	72
44	79
45	80
46	81
47	83
48	85
49	86
50	88
51	89
52	90
53	91
54	92
55	94
56	95
57	96
58	97
59	100
60	101
61	102
62	103
63	105
64	106
65	107

n	a(n)
1	0
2	3
3	4
4	6
5	7
6	9
7	11
8	12
9	13
10	19
11	20
12	21
13	24
14	26
15	29
16	31
17	32
18	34
19	36
20	37
21	39
22	41
23	43
24	44
25	45
26	46
27	47
28	48
29	51
30	52
31	53
32	54
33	55
34	57
35	58
36	59
37	60
38	62
39	63
40	66
41	69
42	70
43	72
44	79
45	80
46	81
47	83
48	85
49	86
50	88
51	89
52	90
53	91
54	92
55	94
56	95
57	96
58	97
59	100
60	101
61	102
62	103
63	105
64	106
65	107