A217584 - cp's OEIS frontend

A217584 Numbers k such that d(k^2)/d(k) is an integer, where d(k) is the number of divisors of k.

n	a(n)
1	1
2	144
3	324
4	400
5	784
6	1936
7	2025
8	2500
9	2704
10	3600
11	3969
12	4624
13	5625
14	5776
15	7056
16	8100
17	8464
18	9604
19	9801
20	13456
21	13689
22	15376
23	15876
24	17424
25	19600
26	21609
27	21904
28	22500
29	23409
30	24336
31	26896
32	29241
33	29584
34	30625
35	35344
36	39204
37	41616
38	42849
39	44944
40	48400
41	51984

[1, 144, 324, 400, 784, 1936, 2025, 2500, 2704, 3600, 3969, 4624, 5625, 5776, 7056, 8100, 8464, 9604, 9801, 13456, 13689, 15376, 15876, 17424, 19600, 21609, 21904, 22500, 23409, 24336, 26896, 29241, 29584, 30625, 35344, 39204, 41616, 42849, 44944, 48400, 51984]

cp's OEIS Frontend

A217584 Numbers k such that d(k^2)/d(k) is an integer, where d(k) is the number of divisors of k.

Table of values

List of values