A215696 - cp's OEIS frontend

A215696 a(n)=smallest positive k>n+2 such that k*n+1 is a square.

n	a(n)
1	8
2	12
3	8
4	12
5	16
6	20
7	24
8	15
9	32
10	36
11	40
12	24
13	48
14	52
15	24
16	33
17	64
18	68
19	72
20	42
21	40
22	84
23	88
24	35
25	96
26	100
27	104
28	60
29	112
30	56
31	120
32	69
33	56
34	132
35	48
36	78
37	144
38	148
39	72
40	60
41	160
42	72
43	168
44	96
45	91
46	180
47	184
48	63
49	192
50	196
51	88
52	114
53	208
54	212
55	105
56	85
57	104
58	228
59	232
60	84

[8, 12, 8, 12, 16, 20, 24, 15, 32, 36, 40, 24, 48, 52, 24, 33, 64, 68, 72, 42, 40, 84, 88, 35, 96, 100, 104, 60, 112, 56, 120, 69, 56, 132, 48, 78, 144, 148, 72, 60, 160, 72, 168, 96, 91, 180, 184, 63, 192, 196, 88, 114, 208, 212, 105, 85, 104, 228, 232, 84]

cp's OEIS Frontend

A215696 a(n)=smallest positive k>n+2 such that k*n+1 is a square.

Table of values

List of values

n	a(n)
1	8
2	12
3	8
4	12
5	16
6	20
7	24
8	15
9	32
10	36
11	40
12	24
13	48
14	52
15	24
16	33
17	64
18	68
19	72
20	42
21	40
22	84
23	88
24	35
25	96
26	100
27	104
28	60
29	112
30	56
31	120
32	69
33	56
34	132
35	48
36	78
37	144
38	148
39	72
40	60
41	160
42	72
43	168
44	96
45	91
46	180
47	184
48	63
49	192
50	196
51	88
52	114
53	208
54	212
55	105
56	85
57	104
58	228
59	232
60	84

n	a(n)
1	8
2	12
3	8
4	12
5	16
6	20
7	24
8	15
9	32
10	36
11	40
12	24
13	48
14	52
15	24
16	33
17	64
18	68
19	72
20	42
21	40
22	84
23	88
24	35
25	96
26	100
27	104
28	60
29	112
30	56
31	120
32	69
33	56
34	132
35	48
36	78
37	144
38	148
39	72
40	60
41	160
42	72
43	168
44	96
45	91
46	180
47	184
48	63
49	192
50	196
51	88
52	114
53	208
54	212
55	105
56	85
57	104
58	228
59	232
60	84

n	a(n)
1	8
2	12
3	8
4	12
5	16
6	20
7	24
8	15
9	32
10	36
11	40
12	24
13	48
14	52
15	24
16	33
17	64
18	68
19	72
20	42
21	40
22	84
23	88
24	35
25	96
26	100
27	104
28	60
29	112
30	56
31	120
32	69
33	56
34	132
35	48
36	78
37	144
38	148
39	72
40	60
41	160
42	72
43	168
44	96
45	91
46	180
47	184
48	63
49	192
50	196
51	88
52	114
53	208
54	212
55	105
56	85
57	104
58	228
59	232
60	84