A049439 - cp's OEIS frontend

A049439 Numbers k such that the number of odd divisors of k is an odd divisor of k.

n	a(n)
1	1
2	2
3	4
4	8
5	9
6	16
7	18
8	32
9	36
10	64
11	72
12	128
13	144
14	225
15	256
16	288
17	441
18	450
19	512
20	576
21	625
22	882
23	900
24	1024
25	1089
26	1152
27	1250
28	1521
29	1764
30	1800
31	2025
32	2048
33	2178
34	2304
35	2500
36	2601
37	3042
38	3249
39	3528
40	3600
41	4050
42	4096
43	4356
44	4608
45	4761
46	5000
47	5202
48	5625
49	6084

[1, 2, 4, 8, 9, 16, 18, 32, 36, 64, 72, 128, 144, 225, 256, 288, 441, 450, 512, 576, 625, 882, 900, 1024, 1089, 1152, 1250, 1521, 1764, 1800, 2025, 2048, 2178, 2304, 2500, 2601, 3042, 3249, 3528, 3600, 4050, 4096, 4356, 4608, 4761, 5000, 5202, 5625, 6084]

cp's OEIS Frontend

A049439 Numbers k such that the number of odd divisors of k is an odd divisor of k.

Table of values

List of values