A228731 - cp's OEIS frontend

A228731 Number of independent subsets in the rooted tree with Matula-Goebel number n that contain the root.

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

[1, 1, 2, 1, 3, 2, 4, 1, 4, 3, 5, 2, 6, 4, 6, 1, 5, 4, 8, 3, 8, 5, 9, 2, 9, 6, 8, 4, 10, 6, 8, 1, 10, 5, 12, 4, 12, 8, 12, 3, 8, 8, 10, 5, 12, 9, 15, 2, 16, 9, 10, 6, 16, 8, 15, 4, 16, 10, 9, 6, 18, 8, 16, 1, 18, 10, 9, 5, 18, 12, 20, 4, 15, 12, 18, 8, 20, 12]

cp's OEIS Frontend

A228731 Number of independent subsets in the rooted tree with Matula-Goebel number n that contain the root.

Table of values

List of values

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

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

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