A181795 - cp's OEIS frontend

A181795 Numbers k such that the number of odd divisors of k is an odd divisor of k, and the number of even divisors of k is an even divisor of k.

n	a(n)
1	4
2	16
3	36
4	144
5	256
6	576
7	900
8	1764
9	2304
10	2500
11	3600
12	4356
13	6084
14	7056
15	8100
16	10000
17	10404
18	12996
19	17424
20	19044
21	22500
22	24336
23	26244
24	30276
25	32400
26	34596
27	36864
28	41616
29	49284
30	51984
31	57600
32	60516
33	65536
34	66564
35	76176
36	79524
37	90000

[4, 16, 36, 144, 256, 576, 900, 1764, 2304, 2500, 3600, 4356, 6084, 7056, 8100, 10000, 10404, 12996, 17424, 19044, 22500, 24336, 26244, 30276, 32400, 34596, 36864, 41616, 49284, 51984, 57600, 60516, 65536, 66564, 76176, 79524, 90000]

cp's OEIS Frontend

A181795 Numbers k such that the number of odd divisors of k is an odd divisor of k, and the number of even divisors of k is an even divisor of k.

Table of values

List of values