A205398 - cp's OEIS frontend

A205398 s(k)-s(j), where (k,j) is the least pair for which n divides s(k)-s(j), and s(j)=ceiling(j^2/2).

n	a(n)
1	1
2	4
3	3
4	4
5	5
6	6
7	7
8	8
9	27
10	10
11	11
12	12
13	13
14	14
15	30
16	16
17	17
18	36
19	19
20	20
21	42
22	22
23	23
24	24
25	25
26	26
27	27
28	28
29	29
30	30
31	31
32	32
33	33
34	34
35	70
36	36
37	37
38	38
39	39
40	40
41	41
42	42
43	43
44	44
45	45
46	46
47	47
48	48
49	49
50	100
51	102
52	52
53	53
54	54
55	110
56	56
57	57
58	58
59	59
60	60
61	61
62	62
63	63
64	64
65	130
66	66
67	67

[1, 4, 3, 4, 5, 6, 7, 8, 27, 10, 11, 12, 13, 14, 30, 16, 17, 36, 19, 20, 42, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 70, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 100, 102, 52, 53, 54, 110, 56, 57, 58, 59, 60, 61, 62, 63, 64, 130, 66, 67]

cp's OEIS Frontend

A205398 s(k)-s(j), where (k,j) is the least pair for which n divides s(k)-s(j), and s(j)=ceiling(j^2/2).

Table of values

List of values

n	a(n)
1	1
2	4
3	3
4	4
5	5
6	6
7	7
8	8
9	27
10	10
11	11
12	12
13	13
14	14
15	30
16	16
17	17
18	36
19	19
20	20
21	42
22	22
23	23
24	24
25	25
26	26
27	27
28	28
29	29
30	30
31	31
32	32
33	33
34	34
35	70
36	36
37	37
38	38
39	39
40	40
41	41
42	42
43	43
44	44
45	45
46	46
47	47
48	48
49	49
50	100
51	102
52	52
53	53
54	54
55	110
56	56
57	57
58	58
59	59
60	60
61	61
62	62
63	63
64	64
65	130
66	66
67	67

n	a(n)
1	1
2	4
3	3
4	4
5	5
6	6
7	7
8	8
9	27
10	10
11	11
12	12
13	13
14	14
15	30
16	16
17	17
18	36
19	19
20	20
21	42
22	22
23	23
24	24
25	25
26	26
27	27
28	28
29	29
30	30
31	31
32	32
33	33
34	34
35	70
36	36
37	37
38	38
39	39
40	40
41	41
42	42
43	43
44	44
45	45
46	46
47	47
48	48
49	49
50	100
51	102
52	52
53	53
54	54
55	110
56	56
57	57
58	58
59	59
60	60
61	61
62	62
63	63
64	64
65	130
66	66
67	67

n	a(n)
1	1
2	4
3	3
4	4
5	5
6	6
7	7
8	8
9	27
10	10
11	11
12	12
13	13
14	14
15	30
16	16
17	17
18	36
19	19
20	20
21	42
22	22
23	23
24	24
25	25
26	26
27	27
28	28
29	29
30	30
31	31
32	32
33	33
34	34
35	70
36	36
37	37
38	38
39	39
40	40
41	41
42	42
43	43
44	44
45	45
46	46
47	47
48	48
49	49
50	100
51	102
52	52
53	53
54	54
55	110
56	56
57	57
58	58
59	59
60	60
61	61
62	62
63	63
64	64
65	130
66	66
67	67