A082788 - cp's OEIS frontend

A082788 Numbers k such that the product of Euler phi of the 2 consecutive integers {k,k+1} is a 4th power: if sqrt(sqrt(phi(k)*phi(k+1))) is an integer, then k is here.

n	a(n)
1	1
2	259
3	1260
4	2071
5	2834
6	7574
7	7749
8	9252
9	12800
10	18720
11	28236
12	30039
13	32724
14	42120
15	45395
16	45877
17	68124
18	102656
19	135813
20	246543
21	264440
22	341288
23	389455
24	423163
25	480624
26	523775
27	936471
28	937248
29	1055954
30	1182104
31	1295749
32	1333626
33	1366632
34	1379196
35	1458270
36	1483118

[1, 259, 1260, 2071, 2834, 7574, 7749, 9252, 12800, 18720, 28236, 30039, 32724, 42120, 45395, 45877, 68124, 102656, 135813, 246543, 264440, 341288, 389455, 423163, 480624, 523775, 936471, 937248, 1055954, 1182104, 1295749, 1333626, 1366632, 1379196, 1458270, 1483118]

cp's OEIS Frontend

A082788 Numbers k such that the product of Euler phi of the 2 consecutive integers {k,k+1} is a 4th power: if sqrt(sqrt(phi(k)*phi(k+1))) is an integer, then k is here.

Table of values

List of values