A079218 - cp's OEIS frontend

A079218 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 two-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	0
14	1
15	26
16	36
17	1
18	2
19	0
20	1
21	66
22	94
23	0
24	0
25	0
26	0
27	1
28	161
29	253
30	0
31	5
32	0
33	0
34	0
35	1
36	420
37	668
38	2
39	0
40	0
41	2
42	0
43	0
44	1
45	1093
46	1807
47	0
48	14
49	1
50	0
51	0
52	0
53	0
54	1
55	2916
56	4902
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	1
66	7819
67	13436
68	5
69	36
70	0
71	5
72	0
73	2
74	0
75	0
76	0
77	1
78	21304
79	37016
80	0
81	0
82	0
83	0

[1, 1, 1, 2, 2, 1, 5, 5, 0, 1, 11, 14, 0, 0, 1, 26, 36, 1, 2, 0, 1, 66, 94, 0, 0, 0, 0, 1, 161, 253, 0, 5, 0, 0, 0, 1, 420, 668, 2, 0, 0, 2, 0, 0, 1, 1093, 1807, 0, 14, 1, 0, 0, 0, 0, 1, 2916, 4902, 0, 0, 0, 0, 0, 0, 0, 0, 1, 7819, 13436, 5, 36, 0, 5, 0, 2, 0, 0, 0, 1, 21304, 37016, 0, 0, 0, 0]

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