A068861 - cp's OEIS frontend

A068861 a(1) = 1; a(n+1) is the smallest number not already in the sequence which differs from a(n) at every digit.

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

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

cp's OEIS Frontend

A068861 a(1) = 1; a(n+1) is the smallest number not already in the sequence which differs from a(n) at every digit.

Table of values

List of values

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

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

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