A104021 - cp's OEIS frontend

A104021 Numbers that can be represented as k^2*j with 0 < j <= k and gcd(k, j) = 1.

n	a(n)
1	4
2	9
3	16
4	18
5	25
6	36
7	48
8	49
9	50
10	64
11	75
12	81
13	98
14	100
15	121
16	144
17	147
18	162
19	169
20	180
21	192
22	196
23	225
24	242
25	245
26	256
27	289
28	294
29	300
30	320
31	324
32	338
33	361
34	363
35	400
36	405
37	441
38	448
39	450
40	484
41	507
42	529
43	567
44	576
45	578
46	588
47	605
48	625
49	648
50	676
51	700
52	720
53	722
54	726
55	729

[4, 9, 16, 18, 25, 36, 48, 49, 50, 64, 75, 81, 98, 100, 121, 144, 147, 162, 169, 180, 192, 196, 225, 242, 245, 256, 289, 294, 300, 320, 324, 338, 361, 363, 400, 405, 441, 448, 450, 484, 507, 529, 567, 576, 578, 588, 605, 625, 648, 676, 700, 720, 722, 726, 729]

cp's OEIS Frontend

A104021 Numbers that can be represented as k^2*j with 0 < j <= k and gcd(k, j) = 1.

Table of values

List of values

n	a(n)
1	4
2	9
3	16
4	18
5	25
6	36
7	48
8	49
9	50
10	64
11	75
12	81
13	98
14	100
15	121
16	144
17	147
18	162
19	169
20	180
21	192
22	196
23	225
24	242
25	245
26	256
27	289
28	294
29	300
30	320
31	324
32	338
33	361
34	363
35	400
36	405
37	441
38	448
39	450
40	484
41	507
42	529
43	567
44	576
45	578
46	588
47	605
48	625
49	648
50	676
51	700
52	720
53	722
54	726
55	729

n	a(n)
1	4
2	9
3	16
4	18
5	25
6	36
7	48
8	49
9	50
10	64
11	75
12	81
13	98
14	100
15	121
16	144
17	147
18	162
19	169
20	180
21	192
22	196
23	225
24	242
25	245
26	256
27	289
28	294
29	300
30	320
31	324
32	338
33	361
34	363
35	400
36	405
37	441
38	448
39	450
40	484
41	507
42	529
43	567
44	576
45	578
46	588
47	605
48	625
49	648
50	676
51	700
52	720
53	722
54	726
55	729

n	a(n)
1	4
2	9
3	16
4	18
5	25
6	36
7	48
8	49
9	50
10	64
11	75
12	81
13	98
14	100
15	121
16	144
17	147
18	162
19	169
20	180
21	192
22	196
23	225
24	242
25	245
26	256
27	289
28	294
29	300
30	320
31	324
32	338
33	361
34	363
35	400
36	405
37	441
38	448
39	450
40	484
41	507
42	529
43	567
44	576
45	578
46	588
47	605
48	625
49	648
50	676
51	700
52	720
53	722
54	726
55	729