A198338 - cp's OEIS frontend

A198338 Irregular triangle read by rows: row n is the sequence of Matula numbers of the rooted subtrees of the rooted tree with Matula-Goebel number n. A root subtree of a rooted tree T is a subtree of T containing the root.

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

[1, 1, 2, 1, 2, 3, 1, 2, 2, 4, 1, 2, 3, 5, 1, 2, 2, 3, 4, 6, 1, 2, 3, 3, 7, 1, 2, 2, 2, 4, 4, 4, 8, 1, 2, 2, 3, 3, 4, 6, 6, 9, 1, 2, 2, 3, 4, 5, 6, 10, 1, 2, 3, 5, 11, 1, 2, 2, 2, 3, 4, 4, 4, 6, 6, 8, 12, 1, 2, 3, 3, 4, 6, 6, 7, 15, 1, 2, 2, 3, 3, 4, 5, 6, 6]

cp's OEIS Frontend

A198338 Irregular triangle read by rows: row n is the sequence of Matula numbers of the rooted subtrees of the rooted tree with Matula-Goebel number n. A root subtree of a rooted tree T is a subtree of T containing the root.

Table of values

List of values

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

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

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