A370952 - cp's OEIS frontend

A370952 a(1) = 1; for n > 1, a(n) is the least positive integer not already in the sequence such that a(n) == a(n-1) (mod 2*n-1).

n	a(n)
1	1
2	4
3	9
4	2
5	11
6	22
7	35
8	5
9	39
10	20
11	41
12	18
13	43
14	16
15	45
16	14
17	47
18	12
19	49
20	10
21	51
22	8
23	53
24	6
25	55
26	106
27	159
28	104
29	161
30	102
31	163
32	37
33	167
34	33
35	171
36	29
37	175
38	25
39	179
40	21
41	183
42	17
43	187
44	13
45	191
46	100
47	7
48	197
49	3
50	201
51	302
52	96
53	306
54	92
55	310
56	88
57	314
58	84
59	318
60	80
61	322
62	76
63	326
64	72
65	330
66	68
67	334
68	64
69	338
70	60
71	342
72	56
73	346
74	52
75	350

[1, 4, 9, 2, 11, 22, 35, 5, 39, 20, 41, 18, 43, 16, 45, 14, 47, 12, 49, 10, 51, 8, 53, 6, 55, 106, 159, 104, 161, 102, 163, 37, 167, 33, 171, 29, 175, 25, 179, 21, 183, 17, 187, 13, 191, 100, 7, 197, 3, 201, 302, 96, 306, 92, 310, 88, 314, 84, 318, 80, 322, 76, 326, 72, 330, 68, 334, 64, 338, 60, 342, 56, 346, 52, 350]

cp's OEIS Frontend

A370952 a(1) = 1; for n > 1, a(n) is the least positive integer not already in the sequence such that a(n) == a(n-1) (mod 2*n-1).

Table of values

List of values

n	a(n)
1	1
2	4
3	9
4	2
5	11
6	22
7	35
8	5
9	39
10	20
11	41
12	18
13	43
14	16
15	45
16	14
17	47
18	12
19	49
20	10
21	51
22	8
23	53
24	6
25	55
26	106
27	159
28	104
29	161
30	102
31	163
32	37
33	167
34	33
35	171
36	29
37	175
38	25
39	179
40	21
41	183
42	17
43	187
44	13
45	191
46	100
47	7
48	197
49	3
50	201
51	302
52	96
53	306
54	92
55	310
56	88
57	314
58	84
59	318
60	80
61	322
62	76
63	326
64	72
65	330
66	68
67	334
68	64
69	338
70	60
71	342
72	56
73	346
74	52
75	350

n	a(n)
1	1
2	4
3	9
4	2
5	11
6	22
7	35
8	5
9	39
10	20
11	41
12	18
13	43
14	16
15	45
16	14
17	47
18	12
19	49
20	10
21	51
22	8
23	53
24	6
25	55
26	106
27	159
28	104
29	161
30	102
31	163
32	37
33	167
34	33
35	171
36	29
37	175
38	25
39	179
40	21
41	183
42	17
43	187
44	13
45	191
46	100
47	7
48	197
49	3
50	201
51	302
52	96
53	306
54	92
55	310
56	88
57	314
58	84
59	318
60	80
61	322
62	76
63	326
64	72
65	330
66	68
67	334
68	64
69	338
70	60
71	342
72	56
73	346
74	52
75	350

n	a(n)
1	1
2	4
3	9
4	2
5	11
6	22
7	35
8	5
9	39
10	20
11	41
12	18
13	43
14	16
15	45
16	14
17	47
18	12
19	49
20	10
21	51
22	8
23	53
24	6
25	55
26	106
27	159
28	104
29	161
30	102
31	163
32	37
33	167
34	33
35	171
36	29
37	175
38	25
39	179
40	21
41	183
42	17
43	187
44	13
45	191
46	100
47	7
48	197
49	3
50	201
51	302
52	96
53	306
54	92
55	310
56	88
57	314
58	84
59	318
60	80
61	322
62	76
63	326
64	72
65	330
66	68
67	334
68	64
69	338
70	60
71	342
72	56
73	346
74	52
75	350