A373026 - cp's OEIS frontend

A373026 a(n) is the least positive integer k such that 3n^2 + 2n - k is a square.

n	a(n)
1	1
2	7
3	8
4	7
5	4
6	20
7	17
8	12
9	5
10	31
11	24
12	15
13	4
14	40
15	29
16	16
17	1
18	47
19	32
20	15
21	69
22	52
23	33
24	12
25	76
26	55
27	32
28	7
29	81
30	56
31	29
32	111
33	84
34	55
35	24
36	116
37	85
38	52
39	17
40	119
41	84
42	47
43	8
44	120
45	81
46	40
47	160
48	119
49	76
50	31
51	161
52	116
53	69
54	20
55	160
56	111
57	60
58	7
59	157
60	104
61	49
62	207
63	152
64	95
65	36
66	204
67	145
68	84
69	21
70	199
71	136
72	71

[1, 7, 8, 7, 4, 20, 17, 12, 5, 31, 24, 15, 4, 40, 29, 16, 1, 47, 32, 15, 69, 52, 33, 12, 76, 55, 32, 7, 81, 56, 29, 111, 84, 55, 24, 116, 85, 52, 17, 119, 84, 47, 8, 120, 81, 40, 160, 119, 76, 31, 161, 116, 69, 20, 160, 111, 60, 7, 157, 104, 49, 207, 152, 95, 36, 204, 145, 84, 21, 199, 136, 71]

cp's OEIS Frontend

A373026 a(n) is the least positive integer k such that 3n^2 + 2n - k is a square.

Table of values

List of values

n	a(n)
1	1
2	7
3	8
4	7
5	4
6	20
7	17
8	12
9	5
10	31
11	24
12	15
13	4
14	40
15	29
16	16
17	1
18	47
19	32
20	15
21	69
22	52
23	33
24	12
25	76
26	55
27	32
28	7
29	81
30	56
31	29
32	111
33	84
34	55
35	24
36	116
37	85
38	52
39	17
40	119
41	84
42	47
43	8
44	120
45	81
46	40
47	160
48	119
49	76
50	31
51	161
52	116
53	69
54	20
55	160
56	111
57	60
58	7
59	157
60	104
61	49
62	207
63	152
64	95
65	36
66	204
67	145
68	84
69	21
70	199
71	136
72	71

n	a(n)
1	1
2	7
3	8
4	7
5	4
6	20
7	17
8	12
9	5
10	31
11	24
12	15
13	4
14	40
15	29
16	16
17	1
18	47
19	32
20	15
21	69
22	52
23	33
24	12
25	76
26	55
27	32
28	7
29	81
30	56
31	29
32	111
33	84
34	55
35	24
36	116
37	85
38	52
39	17
40	119
41	84
42	47
43	8
44	120
45	81
46	40
47	160
48	119
49	76
50	31
51	161
52	116
53	69
54	20
55	160
56	111
57	60
58	7
59	157
60	104
61	49
62	207
63	152
64	95
65	36
66	204
67	145
68	84
69	21
70	199
71	136
72	71

cp's OEIS Frontend

A373026 a(n) is the least positive integer k such that 3*n^2 + 2*n - k is a square.

Table of values

List of values

A373026 a(n) is the least positive integer k such that 3n^2 + 2n - k is a square.

n	a(n)
1	1
2	7
3	8
4	7
5	4
6	20
7	17
8	12
9	5
10	31
11	24
12	15
13	4
14	40
15	29
16	16
17	1
18	47
19	32
20	15
21	69
22	52
23	33
24	12
25	76
26	55
27	32
28	7
29	81
30	56
31	29
32	111
33	84
34	55
35	24
36	116
37	85
38	52
39	17
40	119
41	84
42	47
43	8
44	120
45	81
46	40
47	160
48	119
49	76
50	31
51	161
52	116
53	69
54	20
55	160
56	111
57	60
58	7
59	157
60	104
61	49
62	207
63	152
64	95
65	36
66	204
67	145
68	84
69	21
70	199
71	136
72	71