A350151 - cp's OEIS frontend

A350151 Variation of Van Eck's sequence A181391: a(1) = 0; a(n+1) is the positive offset from the end of the string concatenating a(1) through a(n-1) to the first appearance of a(n). a(n+1) = 0 if a(n) does not appear in the string.

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	2
8	2
9	1
10	6
11	0
12	5
13	0
14	2
15	6
16	5
17	4
18	0
19	5
20	3
21	0
22	3
23	2
24	9
25	0
26	4
27	9
28	3
29	6
30	14
31	0
32	7
33	0
34	2
35	12
36	0
37	4
38	8
39	0
40	3
41	14
42	13
43	0
44	6
45	19
46	0
47	4
48	8
49	13
50	9
51	6
52	9
53	2
54	22
55	53
56	43
57	0
58	15
59	0
60	3
61	5
62	3
63	2
64	12
65	38
66	0
67	9
68	21
69	7
70	49
71	57
72	0
73	9
74	4
75	6
76	33
77	0
78	6
79	4
80	6
81	2

[0, 0, 1, 0, 2, 0, 2, 2, 1, 6, 0, 5, 0, 2, 6, 5, 4, 0, 5, 3, 0, 3, 2, 9, 0, 4, 9, 3, 6, 14, 0, 7, 0, 2, 12, 0, 4, 8, 0, 3, 14, 13, 0, 6, 19, 0, 4, 8, 13, 9, 6, 9, 2, 22, 53, 43, 0, 15, 0, 3, 5, 3, 2, 12, 38, 0, 9, 21, 7, 49, 57, 0, 9, 4, 6, 33, 0, 6, 4, 6, 2]

cp's OEIS Frontend

A350151 Variation of Van Eck's sequence A181391: a(1) = 0; a(n+1) is the positive offset from the end of the string concatenating a(1) through a(n-1) to the first appearance of a(n). a(n+1) = 0 if a(n) does not appear in the string.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	2
8	2
9	1
10	6
11	0
12	5
13	0
14	2
15	6
16	5
17	4
18	0
19	5
20	3
21	0
22	3
23	2
24	9
25	0
26	4
27	9
28	3
29	6
30	14
31	0
32	7
33	0
34	2
35	12
36	0
37	4
38	8
39	0
40	3
41	14
42	13
43	0
44	6
45	19
46	0
47	4
48	8
49	13
50	9
51	6
52	9
53	2
54	22
55	53
56	43
57	0
58	15
59	0
60	3
61	5
62	3
63	2
64	12
65	38
66	0
67	9
68	21
69	7
70	49
71	57
72	0
73	9
74	4
75	6
76	33
77	0
78	6
79	4
80	6
81	2

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	2
8	2
9	1
10	6
11	0
12	5
13	0
14	2
15	6
16	5
17	4
18	0
19	5
20	3
21	0
22	3
23	2
24	9
25	0
26	4
27	9
28	3
29	6
30	14
31	0
32	7
33	0
34	2
35	12
36	0
37	4
38	8
39	0
40	3
41	14
42	13
43	0
44	6
45	19
46	0
47	4
48	8
49	13
50	9
51	6
52	9
53	2
54	22
55	53
56	43
57	0
58	15
59	0
60	3
61	5
62	3
63	2
64	12
65	38
66	0
67	9
68	21
69	7
70	49
71	57
72	0
73	9
74	4
75	6
76	33
77	0
78	6
79	4
80	6
81	2

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	2
8	2
9	1
10	6
11	0
12	5
13	0
14	2
15	6
16	5
17	4
18	0
19	5
20	3
21	0
22	3
23	2
24	9
25	0
26	4
27	9
28	3
29	6
30	14
31	0
32	7
33	0
34	2
35	12
36	0
37	4
38	8
39	0
40	3
41	14
42	13
43	0
44	6
45	19
46	0
47	4
48	8
49	13
50	9
51	6
52	9
53	2
54	22
55	53
56	43
57	0
58	15
59	0
60	3
61	5
62	3
63	2
64	12
65	38
66	0
67	9
68	21
69	7
70	49
71	57
72	0
73	9
74	4
75	6
76	33
77	0
78	6
79	4
80	6
81	2