A305709 - cp's OEIS frontend

A305709 Least k such that there exists a three-term sequence n = b_1 < b_2 < b_3 = k such that b_1 * b_2 * b_3 is square.

n	a(n)
1	8
2	6
3	8
4	16
5	10
6	12
7	14
8	18
9	25
10	20
11	22
12	20
13	26
14	24
15	27
16	32
17	34
18	27
19	38
20	30
21	28
22	33
23	46
24	32
25	48
26	52
27	40
28	45
29	58
30	42
31	62
32	45
33	48
34	54
35	56
36	64
37	74
38	57
39	52
40	50
41	82
42	56
43	86
44	55
45	60
46	69
47	94
48	54
49	72
50	63
51	75
52	78
53	106
54	75
55	90
56	72
57	76
58	96
59	118
60	80
61	122
62	96
63	84
64	98
65	104

[8, 6, 8, 16, 10, 12, 14, 18, 25, 20, 22, 20, 26, 24, 27, 32, 34, 27, 38, 30, 28, 33, 46, 32, 48, 52, 40, 45, 58, 42, 62, 45, 48, 54, 56, 64, 74, 57, 52, 50, 82, 56, 86, 55, 60, 69, 94, 54, 72, 63, 75, 78, 106, 75, 90, 72, 76, 96, 118, 80, 122, 96, 84, 98, 104]

cp's OEIS Frontend

A305709 Least k such that there exists a three-term sequence n = b_1 < b_2 < b_3 = k such that b_1 * b_2 * b_3 is square.

Table of values

List of values

n	a(n)
1	8
2	6
3	8
4	16
5	10
6	12
7	14
8	18
9	25
10	20
11	22
12	20
13	26
14	24
15	27
16	32
17	34
18	27
19	38
20	30
21	28
22	33
23	46
24	32
25	48
26	52
27	40
28	45
29	58
30	42
31	62
32	45
33	48
34	54
35	56
36	64
37	74
38	57
39	52
40	50
41	82
42	56
43	86
44	55
45	60
46	69
47	94
48	54
49	72
50	63
51	75
52	78
53	106
54	75
55	90
56	72
57	76
58	96
59	118
60	80
61	122
62	96
63	84
64	98
65	104

n	a(n)
1	8
2	6
3	8
4	16
5	10
6	12
7	14
8	18
9	25
10	20
11	22
12	20
13	26
14	24
15	27
16	32
17	34
18	27
19	38
20	30
21	28
22	33
23	46
24	32
25	48
26	52
27	40
28	45
29	58
30	42
31	62
32	45
33	48
34	54
35	56
36	64
37	74
38	57
39	52
40	50
41	82
42	56
43	86
44	55
45	60
46	69
47	94
48	54
49	72
50	63
51	75
52	78
53	106
54	75
55	90
56	72
57	76
58	96
59	118
60	80
61	122
62	96
63	84
64	98
65	104

n	a(n)
1	8
2	6
3	8
4	16
5	10
6	12
7	14
8	18
9	25
10	20
11	22
12	20
13	26
14	24
15	27
16	32
17	34
18	27
19	38
20	30
21	28
22	33
23	46
24	32
25	48
26	52
27	40
28	45
29	58
30	42
31	62
32	45
33	48
34	54
35	56
36	64
37	74
38	57
39	52
40	50
41	82
42	56
43	86
44	55
45	60
46	69
47	94
48	54
49	72
50	63
51	75
52	78
53	106
54	75
55	90
56	72
57	76
58	96
59	118
60	80
61	122
62	96
63	84
64	98
65	104