A079220 - cp's OEIS frontend

A079220 Triangle T(n,d) (listed row-wise: T(1,1)=1, T(2,1)=1, T(2,2)=1, T(3,1)=2, T(3,2)=2, T(3,3)=1, ...) giving the number of n-edge general plane trees with root degree d that are fixed by the four-fold application of Catalan Automorphisms A057511/A057512 (Deep rotation of general parenthesizations/plane trees).

n	a(n)
0	1
1	1
2	1
3	2
4	2
5	1
6	5
7	5
8	0
9	1
10	11
11	14
12	0
13	4
14	1
15	30
16	36
17	1
18	14
19	0
20	1
21	82
22	102
23	0
24	48
25	0
26	0
27	1
28	233
29	293
30	0
31	153
32	0
33	0
34	0
35	1
36	680
37	860
38	2
39	488
40	0
41	2
42	0
43	0
44	1
45	2033
46	2575
47	0
48	1550
49	1
50	0
51	0
52	4
53	0
54	1
55	6164
56	7838
57	0
58	4920
59	0
60	0
61	0
62	0
63	0
64	0
65	1
66	18923
67	24148
68	5
69	15672
70	0
71	5
72	0
73	14
74	0
75	0
76	0
77	1

[1, 1, 1, 2, 2, 1, 5, 5, 0, 1, 11, 14, 0, 4, 1, 30, 36, 1, 14, 0, 1, 82, 102, 0, 48, 0, 0, 1, 233, 293, 0, 153, 0, 0, 0, 1, 680, 860, 2, 488, 0, 2, 0, 0, 1, 2033, 2575, 0, 1550, 1, 0, 0, 4, 0, 1, 6164, 7838, 0, 4920, 0, 0, 0, 0, 0, 0, 1, 18923, 24148, 5, 15672, 0, 5, 0, 14, 0, 0, 0, 1]

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