A234840 - cp's OEIS frontend

A234840 Self-inverse and multiplicative permutation of integers: a(0) = 0, a(1) = 1, a(2) = 3, a(3) = 2, a(p_i) = p_{a(i+1)-1} for primes with index i > 2, and a(u * v) = a(u) * a(v) for u, v > 0.

n	a(n)
0	0
1	1
2	3
3	2
4	9
5	19
6	6
7	61
8	27
9	4
10	57
11	11
12	18
13	281
14	183
15	38
16	81
17	101
18	12
19	5
20	171
21	122
22	33
23	263
24	54
25	361
26	843
27	8
28	549
29	29
30	114
31	59
32	243
33	22
34	303
35	1159
36	36
37	1811
38	15
39	562
40	513
41	1091
42	366
43	157
44	99
45	76
46	789
47	409
48	162
49	3721
50	1083
51	202
52	2529
53	541
54	24
55	209
56	1647
57	10
58	87
59	31

[0, 1, 3, 2, 9, 19, 6, 61, 27, 4, 57, 11, 18, 281, 183, 38, 81, 101, 12, 5, 171, 122, 33, 263, 54, 361, 843, 8, 549, 29, 114, 59, 243, 22, 303, 1159, 36, 1811, 15, 562, 513, 1091, 366, 157, 99, 76, 789, 409, 162, 3721, 1083, 202, 2529, 541, 24, 209, 1647, 10, 87, 31]

cp's OEIS Frontend

A234840 Self-inverse and multiplicative permutation of integers: a(0) = 0, a(1) = 1, a(2) = 3, a(3) = 2, a(p_i) = p_{a(i+1)-1} for primes with index i > 2, and a(u * v) = a(u) * a(v) for u, v > 0.

Table of values

List of values