A318842 - cp's OEIS frontend

A318842 a(n) is the least integer m such that A047994(m) = ((n-1)/n)*m where A047994 is the unitary totient function, or 0 if there is no such m.

n	a(n)
2	2
3	3
4	4
5	5
6	144
7	7
8	8
9	9
10	400
11	11
12	64281600
13	13
14	84672
15	129600
16	16
17	17
18	518400
19	19
20	4327213363200
21	254016
22	6326996189184000000
23	23
24	300174920860041216000
25	25
26	2747437056
27	27
28	3136
29	29

[2, 3, 4, 5, 144, 7, 8, 9, 400, 11, 64281600, 13, 84672, 129600, 16, 17, 518400, 19, 4327213363200, 254016, 6326996189184000000, 23, 300174920860041216000, 25, 2747437056, 27, 3136, 29]

cp's OEIS Frontend

A318842 a(n) is the least integer m such that A047994(m) = ((n-1)/n)*m where A047994 is the unitary totient function, or 0 if there is no such m.

Table of values

List of values