A204998 - cp's OEIS frontend

A204998 a(n) = k^2 - j^2, where (k^2,j^2) is the least pair of distinct squares for which n divides their difference.

n	a(n)
1	3
2	8
3	3
4	8
5	5
6	12
7	7
8	8
9	9
10	20
11	11
12	12
13	13
14	28
15	15
16	16
17	17
18	72
19	19
20	20
21	21
22	44
23	23
24	24
25	75
26	52
27	27
28	28
29	29
30	60
31	31
32	32
33	33
34	68
35	35
36	72
37	37
38	76
39	39
40	40
41	41
42	84
43	43
44	44
45	45
46	92
47	47
48	48
49	147
50	200
51	51
52	52
53	53
54	108
55	55
56	56
57	57
58	116
59	59
60	60
61	61
62	124
63	63
64	64
65	65
66	132
67	67
68	68
69	69
70	140
71	71
72	72
73	73
74	148
75	75
76	76
77	77
78	156
79	79
80	80
81	81
82	164

[3, 8, 3, 8, 5, 12, 7, 8, 9, 20, 11, 12, 13, 28, 15, 16, 17, 72, 19, 20, 21, 44, 23, 24, 75, 52, 27, 28, 29, 60, 31, 32, 33, 68, 35, 72, 37, 76, 39, 40, 41, 84, 43, 44, 45, 92, 47, 48, 147, 200, 51, 52, 53, 108, 55, 56, 57, 116, 59, 60, 61, 124, 63, 64, 65, 132, 67, 68, 69, 140, 71, 72, 73, 148, 75, 76, 77, 156, 79, 80, 81, 164]

cp's OEIS Frontend

A204998 a(n) = k^2 - j^2, where (k^2,j^2) is the least pair of distinct squares for which n divides their difference.

Table of values

List of values

n	a(n)
1	3
2	8
3	3
4	8
5	5
6	12
7	7
8	8
9	9
10	20
11	11
12	12
13	13
14	28
15	15
16	16
17	17
18	72
19	19
20	20
21	21
22	44
23	23
24	24
25	75
26	52
27	27
28	28
29	29
30	60
31	31
32	32
33	33
34	68
35	35
36	72
37	37
38	76
39	39
40	40
41	41
42	84
43	43
44	44
45	45
46	92
47	47
48	48
49	147
50	200
51	51
52	52
53	53
54	108
55	55
56	56
57	57
58	116
59	59
60	60
61	61
62	124
63	63
64	64
65	65
66	132
67	67
68	68
69	69
70	140
71	71
72	72
73	73
74	148
75	75
76	76
77	77
78	156
79	79
80	80
81	81
82	164

n	a(n)
1	3
2	8
3	3
4	8
5	5
6	12
7	7
8	8
9	9
10	20
11	11
12	12
13	13
14	28
15	15
16	16
17	17
18	72
19	19
20	20
21	21
22	44
23	23
24	24
25	75
26	52
27	27
28	28
29	29
30	60
31	31
32	32
33	33
34	68
35	35
36	72
37	37
38	76
39	39
40	40
41	41
42	84
43	43
44	44
45	45
46	92
47	47
48	48
49	147
50	200
51	51
52	52
53	53
54	108
55	55
56	56
57	57
58	116
59	59
60	60
61	61
62	124
63	63
64	64
65	65
66	132
67	67
68	68
69	69
70	140
71	71
72	72
73	73
74	148
75	75
76	76
77	77
78	156
79	79
80	80
81	81
82	164

n	a(n)
1	3
2	8
3	3
4	8
5	5
6	12
7	7
8	8
9	9
10	20
11	11
12	12
13	13
14	28
15	15
16	16
17	17
18	72
19	19
20	20
21	21
22	44
23	23
24	24
25	75
26	52
27	27
28	28
29	29
30	60
31	31
32	32
33	33
34	68
35	35
36	72
37	37
38	76
39	39
40	40
41	41
42	84
43	43
44	44
45	45
46	92
47	47
48	48
49	147
50	200
51	51
52	52
53	53
54	108
55	55
56	56
57	57
58	116
59	59
60	60
61	61
62	124
63	63
64	64
65	65
66	132
67	67
68	68
69	69
70	140
71	71
72	72
73	73
74	148
75	75
76	76
77	77
78	156
79	79
80	80
81	81
82	164