A107772 - cp's OEIS frontend

A107772 a(1)=1, a(n) = smallest integer not previously used which contains a digit from a(n-1).

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

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

cp's OEIS Frontend

A107772 a(1)=1, a(n) = smallest integer not previously used which contains a digit from a(n-1).

Table of values

List of values

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

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

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