A065391 - cp's OEIS frontend

A065391 Numbers m such that A062401(m) = phi(sigma(m)) is increasing to a record value, i.e., A062401(m) represents a new peak, so that A062401(m) > A062401(k) for all k < m.

n	a(n)
1	1
2	2
3	4
4	8
5	9
6	16
7	32
8	36
9	64
10	100
11	144
12	256
13	324
14	400
15	576
16	900
17	1296
18	1600
19	2304
20	2916
21	3600
22	5184
23	8100
24	9216
25	11664
26	14400
27	20736
28	22500
29	25600
30	30276
31	32400
32	41616
33	46656
34	57600
35	69696
36	72900
37	82944
38	90000
39	104976
40	115600
41	121104
42	129600

[1, 2, 4, 8, 9, 16, 32, 36, 64, 100, 144, 256, 324, 400, 576, 900, 1296, 1600, 2304, 2916, 3600, 5184, 8100, 9216, 11664, 14400, 20736, 22500, 25600, 30276, 32400, 41616, 46656, 57600, 69696, 72900, 82944, 90000, 104976, 115600, 121104, 129600]

cp's OEIS Frontend

A065391 Numbers m such that A062401(m) = phi(sigma(m)) is increasing to a record value, i.e., A062401(m) represents a new peak, so that A062401(m) > A062401(k) for all k < m.

Table of values

List of values