A212623 - cp's OEIS frontend

A212623 Irregular triangle read by rows: T(n,k) is the number of independent vertex subsets with k vertices of the rooted tree with Matula-Goebel number n (n>=1, k>=0).

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	3
7	1
8	1
9	3
10	1
11	1
12	4
13	3
14	1
15	4
16	3
17	1
18	4
19	3
20	1
21	1
22	4
23	3
24	1
25	1
26	5
27	6
28	1
29	1
30	5
31	6
32	1
33	1
34	5
35	6
36	1
37	1
38	5
39	6
40	2
41	1
42	5
43	6
44	2
45	1
46	5
47	6
48	2
49	1
50	6
51	10
52	4
53	1
54	5
55	6
56	4
57	1
58	1
59	5
60	6
61	2
62	1
63	6
64	10
65	5
66	1
67	5
68	6
69	4
70	1
71	1
72	6
73	10
74	5
75	1
76	1
77	6
78	10
79	5
80	1
81	1
82	6
83	10
84	4
85	1
86	6
87	10
88	5
89	1
90	6
91	10
92	7
93	2
94	1
95	7
96	15

[1, 1, 1, 2, 1, 3, 1, 1, 3, 1, 1, 4, 3, 1, 4, 3, 1, 4, 3, 1, 1, 4, 3, 1, 1, 5, 6, 1, 1, 5, 6, 1, 1, 5, 6, 1, 1, 5, 6, 2, 1, 5, 6, 2, 1, 5, 6, 2, 1, 6, 10, 4, 1, 5, 6, 4, 1, 1, 5, 6, 2, 1, 6, 10, 5, 1, 5, 6, 4, 1, 1, 6, 10, 5, 1, 1, 6, 10, 5, 1, 1, 6, 10, 4, 1, 6, 10, 5, 1, 6, 10, 7, 2, 1, 7, 15]

cp's OEIS Frontend

A212623 Irregular triangle read by rows: T(n,k) is the number of independent vertex subsets with k vertices of the rooted tree with Matula-Goebel number n (n>=1, k>=0).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	3
7	1
8	1
9	3
10	1
11	1
12	4
13	3
14	1
15	4
16	3
17	1
18	4
19	3
20	1
21	1
22	4
23	3
24	1
25	1
26	5
27	6
28	1
29	1
30	5
31	6
32	1
33	1
34	5
35	6
36	1
37	1
38	5
39	6
40	2
41	1
42	5
43	6
44	2
45	1
46	5
47	6
48	2
49	1
50	6
51	10
52	4
53	1
54	5
55	6
56	4
57	1
58	1
59	5
60	6
61	2
62	1
63	6
64	10
65	5
66	1
67	5
68	6
69	4
70	1
71	1
72	6
73	10
74	5
75	1
76	1
77	6
78	10
79	5
80	1
81	1
82	6
83	10
84	4
85	1
86	6
87	10
88	5
89	1
90	6
91	10
92	7
93	2
94	1
95	7
96	15

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	3
7	1
8	1
9	3
10	1
11	1
12	4
13	3
14	1
15	4
16	3
17	1
18	4
19	3
20	1
21	1
22	4
23	3
24	1
25	1
26	5
27	6
28	1
29	1
30	5
31	6
32	1
33	1
34	5
35	6
36	1
37	1
38	5
39	6
40	2
41	1
42	5
43	6
44	2
45	1
46	5
47	6
48	2
49	1
50	6
51	10
52	4
53	1
54	5
55	6
56	4
57	1
58	1
59	5
60	6
61	2
62	1
63	6
64	10
65	5
66	1
67	5
68	6
69	4
70	1
71	1
72	6
73	10
74	5
75	1
76	1
77	6
78	10
79	5
80	1
81	1
82	6
83	10
84	4
85	1
86	6
87	10
88	5
89	1
90	6
91	10
92	7
93	2
94	1
95	7
96	15

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	3
7	1
8	1
9	3
10	1
11	1
12	4
13	3
14	1
15	4
16	3
17	1
18	4
19	3
20	1
21	1
22	4
23	3
24	1
25	1
26	5
27	6
28	1
29	1
30	5
31	6
32	1
33	1
34	5
35	6
36	1
37	1
38	5
39	6
40	2
41	1
42	5
43	6
44	2
45	1
46	5
47	6
48	2
49	1
50	6
51	10
52	4
53	1
54	5
55	6
56	4
57	1
58	1
59	5
60	6
61	2
62	1
63	6
64	10
65	5
66	1
67	5
68	6
69	4
70	1
71	1
72	6
73	10
74	5
75	1
76	1
77	6
78	10
79	5
80	1
81	1
82	6
83	10
84	4
85	1
86	6
87	10
88	5
89	1
90	6
91	10
92	7
93	2
94	1
95	7
96	15