A175034 - cp's OEIS frontend

A175034 Offsets i such that i + n*(n+1)/2 is never a perfect square for any n>0.

n	a(n)
1	2
2	5
3	7
4	11
5	12
6	14
7	17
8	18
9	20
10	23
11	27
12	29
13	31
14	32
15	37
16	38
17	40
18	41
19	42
20	44
21	47
22	50
23	51
24	52
25	56
26	57
27	59
28	62
29	65
30	67
31	68
32	69
33	70
34	73
35	74
36	77
37	82
38	83
39	84
40	86
41	87
42	88
43	92
44	95
45	96
46	98
47	101
48	102
49	104
50	107
51	109
52	110
53	112
54	113
55	117
56	119
57	122
58	125
59	126
60	127
61	128
62	131
63	132
64	135
65	137
66	139

[2, 5, 7, 11, 12, 14, 17, 18, 20, 23, 27, 29, 31, 32, 37, 38, 40, 41, 42, 44, 47, 50, 51, 52, 56, 57, 59, 62, 65, 67, 68, 69, 70, 73, 74, 77, 82, 83, 84, 86, 87, 88, 92, 95, 96, 98, 101, 102, 104, 107, 109, 110, 112, 113, 117, 119, 122, 125, 126, 127, 128, 131, 132, 135, 137, 139]

cp's OEIS Frontend

A175034 Offsets i such that i + n*(n+1)/2 is never a perfect square for any n>0.

Table of values

List of values

n	a(n)
1	2
2	5
3	7
4	11
5	12
6	14
7	17
8	18
9	20
10	23
11	27
12	29
13	31
14	32
15	37
16	38
17	40
18	41
19	42
20	44
21	47
22	50
23	51
24	52
25	56
26	57
27	59
28	62
29	65
30	67
31	68
32	69
33	70
34	73
35	74
36	77
37	82
38	83
39	84
40	86
41	87
42	88
43	92
44	95
45	96
46	98
47	101
48	102
49	104
50	107
51	109
52	110
53	112
54	113
55	117
56	119
57	122
58	125
59	126
60	127
61	128
62	131
63	132
64	135
65	137
66	139

n	a(n)
1	2
2	5
3	7
4	11
5	12
6	14
7	17
8	18
9	20
10	23
11	27
12	29
13	31
14	32
15	37
16	38
17	40
18	41
19	42
20	44
21	47
22	50
23	51
24	52
25	56
26	57
27	59
28	62
29	65
30	67
31	68
32	69
33	70
34	73
35	74
36	77
37	82
38	83
39	84
40	86
41	87
42	88
43	92
44	95
45	96
46	98
47	101
48	102
49	104
50	107
51	109
52	110
53	112
54	113
55	117
56	119
57	122
58	125
59	126
60	127
61	128
62	131
63	132
64	135
65	137
66	139

n	a(n)
1	2
2	5
3	7
4	11
5	12
6	14
7	17
8	18
9	20
10	23
11	27
12	29
13	31
14	32
15	37
16	38
17	40
18	41
19	42
20	44
21	47
22	50
23	51
24	52
25	56
26	57
27	59
28	62
29	65
30	67
31	68
32	69
33	70
34	73
35	74
36	77
37	82
38	83
39	84
40	86
41	87
42	88
43	92
44	95
45	96
46	98
47	101
48	102
49	104
50	107
51	109
52	110
53	112
54	113
55	117
56	119
57	122
58	125
59	126
60	127
61	128
62	131
63	132
64	135
65	137
66	139