A333811 - cp's OEIS frontend

A333811 a(0) = 0; for n > 0, a(n) is the smallest positive integer not yet appearing in the sequence such that a(n-1)^a(n) contains as a substring either a(n-1) or a(n).

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

[0, 1, 2, 5, 3, 7, 4, 6, 8, 9, 11, 15, 12, 14, 13, 10, 16, 17, 21, 20, 25, 18, 23, 19, 22, 24, 26, 29, 30, 28, 31, 27, 32, 33, 35, 34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 47, 46, 48, 50, 49, 51, 52, 53, 55, 54, 56, 57, 59, 58, 61, 60, 62, 63, 64, 65, 66, 67, 68, 69, 70]

cp's OEIS Frontend

A333811 a(0) = 0; for n > 0, a(n) is the smallest positive integer not yet appearing in the sequence such that a(n-1)^a(n) contains as a substring either a(n-1) or a(n).

Table of values

List of values

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

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

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