A072587 - cp's OEIS frontend

A072587 Numbers having at least one prime factor with an even exponent.

n	a(n)
1	4
2	9
3	12
4	16
5	18
6	20
7	25
8	28
9	36
10	44
11	45
12	48
13	49
14	50
15	52
16	60
17	63
18	64
19	68
20	72
21	75
22	76
23	80
24	81
25	84
26	90
27	92
28	98
29	99
30	100
31	108
32	112
33	116
34	117
35	121
36	124
37	126
38	132
39	140
40	144
41	147
42	148
43	150
44	153
45	156
46	162
47	164
48	169
49	171
50	172
51	175
52	176
53	180
54	188
55	192
56	196
57	198
58	200
59	204

[4, 9, 12, 16, 18, 20, 25, 28, 36, 44, 45, 48, 49, 50, 52, 60, 63, 64, 68, 72, 75, 76, 80, 81, 84, 90, 92, 98, 99, 100, 108, 112, 116, 117, 121, 124, 126, 132, 140, 144, 147, 148, 150, 153, 156, 162, 164, 169, 171, 172, 175, 176, 180, 188, 192, 196, 198, 200, 204]

cp's OEIS Frontend

A072587 Numbers having at least one prime factor with an even exponent.

Table of values

List of values

n	a(n)
1	4
2	9
3	12
4	16
5	18
6	20
7	25
8	28
9	36
10	44
11	45
12	48
13	49
14	50
15	52
16	60
17	63
18	64
19	68
20	72
21	75
22	76
23	80
24	81
25	84
26	90
27	92
28	98
29	99
30	100
31	108
32	112
33	116
34	117
35	121
36	124
37	126
38	132
39	140
40	144
41	147
42	148
43	150
44	153
45	156
46	162
47	164
48	169
49	171
50	172
51	175
52	176
53	180
54	188
55	192
56	196
57	198
58	200
59	204

n	a(n)
1	4
2	9
3	12
4	16
5	18
6	20
7	25
8	28
9	36
10	44
11	45
12	48
13	49
14	50
15	52
16	60
17	63
18	64
19	68
20	72
21	75
22	76
23	80
24	81
25	84
26	90
27	92
28	98
29	99
30	100
31	108
32	112
33	116
34	117
35	121
36	124
37	126
38	132
39	140
40	144
41	147
42	148
43	150
44	153
45	156
46	162
47	164
48	169
49	171
50	172
51	175
52	176
53	180
54	188
55	192
56	196
57	198
58	200
59	204

n	a(n)
1	4
2	9
3	12
4	16
5	18
6	20
7	25
8	28
9	36
10	44
11	45
12	48
13	49
14	50
15	52
16	60
17	63
18	64
19	68
20	72
21	75
22	76
23	80
24	81
25	84
26	90
27	92
28	98
29	99
30	100
31	108
32	112
33	116
34	117
35	121
36	124
37	126
38	132
39	140
40	144
41	147
42	148
43	150
44	153
45	156
46	162
47	164
48	169
49	171
50	172
51	175
52	176
53	180
54	188
55	192
56	196
57	198
58	200
59	204