A252754 - cp's OEIS frontend

A252754 Inverse of "Tree of Eratosthenes" permutation: a(1) = 0, after which, a(2n) = 1 + 2a(n), a(2n+1) = 2 a(A268674(2n+1)).

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	8
8	7
9	6
10	9
11	16
12	11
13	32
14	17
15	10
16	15
17	64
18	13
19	128
20	19
21	14
22	33
23	256
24	23
25	12
26	65
27	18
28	35
29	512
30	21
31	1024
32	31
33	22
34	129
35	20
36	27
37	2048
38	257
39	34
40	39
41	4096
42	29
43	8192
44	67
45	30
46	513
47	16384
48	47
49	24
50	25
51	26
52	131
53	32768
54	37
55	28
56	71
57	38
58	1025
59	65536
60	43
61	131072
62	2049
63	66
64	63
65	36
66	45
67	262144
68	259
69	46
70	41
71	524288
72	55
73	1048576
74	4097
75	130
76	515
77	40

[0, 1, 2, 3, 4, 5, 8, 7, 6, 9, 16, 11, 32, 17, 10, 15, 64, 13, 128, 19, 14, 33, 256, 23, 12, 65, 18, 35, 512, 21, 1024, 31, 22, 129, 20, 27, 2048, 257, 34, 39, 4096, 29, 8192, 67, 30, 513, 16384, 47, 24, 25, 26, 131, 32768, 37, 28, 71, 38, 1025, 65536, 43, 131072, 2049, 66, 63, 36, 45, 262144, 259, 46, 41, 524288, 55, 1048576, 4097, 130, 515, 40]

cp's OEIS Frontend

A252754 Inverse of "Tree of Eratosthenes" permutation: a(1) = 0, after which, a(2n) = 1 + 2a(n), a(2n+1) = 2 a(A268674(2n+1)).

Table of values

List of values

cp's OEIS Frontend

A252754 Inverse of "Tree of Eratosthenes" permutation: a(1) = 0, after which, a(2n) = 1 + 2*a(n), a(2n+1) = 2 * a(A268674(2n+1)).

Table of values

List of values

A252754 Inverse of "Tree of Eratosthenes" permutation: a(1) = 0, after which, a(2n) = 1 + 2a(n), a(2n+1) = 2 a(A268674(2n+1)).