A123492 - cp's OEIS frontend

A123492 An involution of nonnegative integers: signature permutation of a nonrecursive Catalan automorphism which swaps the sides of a binary tree if the left subtree of either the left or right hand side toplevel subtree is not empty and otherwise keeps the binary tree intact.

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	8
6	6
7	7
8	5
9	9
10	10
11	20
12	21
13	22
14	14
15	19
16	16
17	17
18	18
19	15
20	11
21	12
22	13
23	23
24	24
25	25
26	26
27	27
28	54
29	55
30	57
31	58
32	59
33	61
34	62
35	63
36	64
37	37
38	38
39	53
40	56
41	60
42	42
43	51
44	44
45	45
46	46
47	47
48	48
49	49
50	50
51	43
52	52
53	39
54	28
55	29
56	40
57	30
58	31
59	32
60	41
61	33
62	34
63	35
64	36
65	65
66	66
67	67
68	68
69	69
70	70
71	71

[0, 1, 2, 3, 4, 8, 6, 7, 5, 9, 10, 20, 21, 22, 14, 19, 16, 17, 18, 15, 11, 12, 13, 23, 24, 25, 26, 27, 54, 55, 57, 58, 59, 61, 62, 63, 64, 37, 38, 53, 56, 60, 42, 51, 44, 45, 46, 47, 48, 49, 50, 43, 52, 39, 28, 29, 40, 30, 31, 32, 41, 33, 34, 35, 36, 65, 66, 67, 68, 69, 70, 71]

cp's OEIS Frontend

A123492 An involution of nonnegative integers: signature permutation of a nonrecursive Catalan automorphism which swaps the sides of a binary tree if the left subtree of either the left or right hand side toplevel subtree is not empty and otherwise keeps the binary tree intact.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	8
6	6
7	7
8	5
9	9
10	10
11	20
12	21
13	22
14	14
15	19
16	16
17	17
18	18
19	15
20	11
21	12
22	13
23	23
24	24
25	25
26	26
27	27
28	54
29	55
30	57
31	58
32	59
33	61
34	62
35	63
36	64
37	37
38	38
39	53
40	56
41	60
42	42
43	51
44	44
45	45
46	46
47	47
48	48
49	49
50	50
51	43
52	52
53	39
54	28
55	29
56	40
57	30
58	31
59	32
60	41
61	33
62	34
63	35
64	36
65	65
66	66
67	67
68	68
69	69
70	70
71	71

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	8
6	6
7	7
8	5
9	9
10	10
11	20
12	21
13	22
14	14
15	19
16	16
17	17
18	18
19	15
20	11
21	12
22	13
23	23
24	24
25	25
26	26
27	27
28	54
29	55
30	57
31	58
32	59
33	61
34	62
35	63
36	64
37	37
38	38
39	53
40	56
41	60
42	42
43	51
44	44
45	45
46	46
47	47
48	48
49	49
50	50
51	43
52	52
53	39
54	28
55	29
56	40
57	30
58	31
59	32
60	41
61	33
62	34
63	35
64	36
65	65
66	66
67	67
68	68
69	69
70	70
71	71

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	8
6	6
7	7
8	5
9	9
10	10
11	20
12	21
13	22
14	14
15	19
16	16
17	17
18	18
19	15
20	11
21	12
22	13
23	23
24	24
25	25
26	26
27	27
28	54
29	55
30	57
31	58
32	59
33	61
34	62
35	63
36	64
37	37
38	38
39	53
40	56
41	60
42	42
43	51
44	44
45	45
46	46
47	47
48	48
49	49
50	50
51	43
52	52
53	39
54	28
55	29
56	40
57	30
58	31
59	32
60	41
61	33
62	34
63	35
64	36
65	65
66	66
67	67
68	68
69	69
70	70
71	71