A276980 - cp's OEIS frontend

A276980 Odd squarefree numbers n > 1 such that lambda(n)^2 = phi(n), where lambda is the Carmichael lambda function and phi is Euler's totient function.

n	a(n)
1	273
2	1729
3	2109
4	2255
5	4433
6	4641
7	4697
8	5673
9	6643
10	6935
11	7667
12	8103
13	8729
14	10235
15	11543
16	14497
17	16385
18	16523
19	17507
20	18915
21	20033
22	22649
23	23579
24	26691
25	29309
26	29393
27	34799
28	35853
29	35929
30	37209
31	37829
32	39277
33	42653
34	45551
35	55699
36	56163
37	68735
38	68901
39	69167
40	69977
41	70993
42	73505
43	75361
44	76373

[273, 1729, 2109, 2255, 4433, 4641, 4697, 5673, 6643, 6935, 7667, 8103, 8729, 10235, 11543, 14497, 16385, 16523, 17507, 18915, 20033, 22649, 23579, 26691, 29309, 29393, 34799, 35853, 35929, 37209, 37829, 39277, 42653, 45551, 55699, 56163, 68735, 68901, 69167, 69977, 70993, 73505, 75361, 76373]

cp's OEIS Frontend

A276980 Odd squarefree numbers n > 1 such that lambda(n)^2 = phi(n), where lambda is the Carmichael lambda function and phi is Euler's totient function.

Table of values

List of values