A125717 - cp's OEIS frontend

A125717 a(0)=0; thereafter a(n) = the smallest nonnegative integer not already in the sequence such that a(n-1) is congruent to a(n) (mod n).

n	a(n)
0	0
1	1
2	3
3	6
4	2
5	7
6	13
7	20
8	4
9	22
10	12
11	23
12	11
13	24
14	10
15	25
16	9
17	26
18	8
19	27
20	47
21	5
22	49
23	72
24	48
25	73
26	21
27	75
28	19
29	77
30	17
31	79
32	15
33	81
34	115
35	45
36	117
37	43
38	119
39	41
40	121
41	39
42	123
43	37
44	125
45	35
46	127
47	33
48	129
49	31
50	131
51	29
52	133
53	80
54	134
55	189
56	245
57	74
58	16
59	193
60	253
61	70
62	132
63	69
64	197
65	67
66	199
67	65

[0, 1, 3, 6, 2, 7, 13, 20, 4, 22, 12, 23, 11, 24, 10, 25, 9, 26, 8, 27, 47, 5, 49, 72, 48, 73, 21, 75, 19, 77, 17, 79, 15, 81, 115, 45, 117, 43, 119, 41, 121, 39, 123, 37, 125, 35, 127, 33, 129, 31, 131, 29, 133, 80, 134, 189, 245, 74, 16, 193, 253, 70, 132, 69, 197, 67, 199, 65]

cp's OEIS Frontend

A125717 a(0)=0; thereafter a(n) = the smallest nonnegative integer not already in the sequence such that a(n-1) is congruent to a(n) (mod n).

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	6
4	2
5	7
6	13
7	20
8	4
9	22
10	12
11	23
12	11
13	24
14	10
15	25
16	9
17	26
18	8
19	27
20	47
21	5
22	49
23	72
24	48
25	73
26	21
27	75
28	19
29	77
30	17
31	79
32	15
33	81
34	115
35	45
36	117
37	43
38	119
39	41
40	121
41	39
42	123
43	37
44	125
45	35
46	127
47	33
48	129
49	31
50	131
51	29
52	133
53	80
54	134
55	189
56	245
57	74
58	16
59	193
60	253
61	70
62	132
63	69
64	197
65	67
66	199
67	65

n	a(n)
0	0
1	1
2	3
3	6
4	2
5	7
6	13
7	20
8	4
9	22
10	12
11	23
12	11
13	24
14	10
15	25
16	9
17	26
18	8
19	27
20	47
21	5
22	49
23	72
24	48
25	73
26	21
27	75
28	19
29	77
30	17
31	79
32	15
33	81
34	115
35	45
36	117
37	43
38	119
39	41
40	121
41	39
42	123
43	37
44	125
45	35
46	127
47	33
48	129
49	31
50	131
51	29
52	133
53	80
54	134
55	189
56	245
57	74
58	16
59	193
60	253
61	70
62	132
63	69
64	197
65	67
66	199
67	65

n	a(n)
0	0
1	1
2	3
3	6
4	2
5	7
6	13
7	20
8	4
9	22
10	12
11	23
12	11
13	24
14	10
15	25
16	9
17	26
18	8
19	27
20	47
21	5
22	49
23	72
24	48
25	73
26	21
27	75
28	19
29	77
30	17
31	79
32	15
33	81
34	115
35	45
36	117
37	43
38	119
39	41
40	121
41	39
42	123
43	37
44	125
45	35
46	127
47	33
48	129
49	31
50	131
51	29
52	133
53	80
54	134
55	189
56	245
57	74
58	16
59	193
60	253
61	70
62	132
63	69
64	197
65	67
66	199
67	65