A213670 - cp's OEIS frontend

A213670 Irregular triangle read by rows: a(n,k) is the number of vertex subsets of the rooted tree with Matula-Goebel number n having k components in the induced subgraph (n>=1, k>=0).

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

[1, 1, 1, 3, 1, 6, 1, 1, 6, 1, 1, 10, 5, 1, 10, 5, 1, 11, 3, 1, 1, 11, 3, 1, 1, 15, 15, 1, 1, 15, 15, 1, 1, 15, 15, 1, 1, 17, 11, 3, 1, 17, 11, 3, 1, 17, 11, 3, 1, 21, 35, 7, 1, 20, 6, 4, 1, 1, 17, 11, 3, 1, 25, 27, 11, 1, 20, 6, 4, 1, 1, 24, 30, 8, 1, 1, 24, 30, 8, 1, 1, 21, 35, 7]

cp's OEIS Frontend

A213670 Irregular triangle read by rows: a(n,k) is the number of vertex subsets of the rooted tree with Matula-Goebel number n having k components in the induced subgraph (n>=1, k>=0).

Table of values

List of values

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

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

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