A303605 - cp's OEIS frontend

A303605 a(n) is the least positive integer not yet in the sequence which shares a digit with a(n-1) and a digit with a(n-2); a(1)=0, a(2)=1.

n	a(n)
1	0
2	1
3	10
4	11
5	100
6	101
7	102
8	12
9	20
10	21
11	22
12	112
13	120
14	103
15	13
16	30
17	31
18	33
19	113
20	123
21	23
22	32
23	122
24	121
25	110
26	104
27	14
28	40
29	41
30	44
31	114
32	124
33	24
34	42
35	142
36	125
37	15
38	25
39	51
40	52
41	55
42	152
43	105
44	50
45	106
46	56
47	16
48	61
49	66
50	116
51	126
52	26
53	62
54	162
55	127
56	17
57	27
58	71
59	72
60	77

[0, 1, 10, 11, 100, 101, 102, 12, 20, 21, 22, 112, 120, 103, 13, 30, 31, 33, 113, 123, 23, 32, 122, 121, 110, 104, 14, 40, 41, 44, 114, 124, 24, 42, 142, 125, 15, 25, 51, 52, 55, 152, 105, 50, 106, 56, 16, 61, 66, 116, 126, 26, 62, 162, 127, 17, 27, 71, 72, 77]

cp's OEIS Frontend

A303605 a(n) is the least positive integer not yet in the sequence which shares a digit with a(n-1) and a digit with a(n-2); a(1)=0, a(2)=1.

Table of values

List of values

n	a(n)
1	0
2	1
3	10
4	11
5	100
6	101
7	102
8	12
9	20
10	21
11	22
12	112
13	120
14	103
15	13
16	30
17	31
18	33
19	113
20	123
21	23
22	32
23	122
24	121
25	110
26	104
27	14
28	40
29	41
30	44
31	114
32	124
33	24
34	42
35	142
36	125
37	15
38	25
39	51
40	52
41	55
42	152
43	105
44	50
45	106
46	56
47	16
48	61
49	66
50	116
51	126
52	26
53	62
54	162
55	127
56	17
57	27
58	71
59	72
60	77

n	a(n)
1	0
2	1
3	10
4	11
5	100
6	101
7	102
8	12
9	20
10	21
11	22
12	112
13	120
14	103
15	13
16	30
17	31
18	33
19	113
20	123
21	23
22	32
23	122
24	121
25	110
26	104
27	14
28	40
29	41
30	44
31	114
32	124
33	24
34	42
35	142
36	125
37	15
38	25
39	51
40	52
41	55
42	152
43	105
44	50
45	106
46	56
47	16
48	61
49	66
50	116
51	126
52	26
53	62
54	162
55	127
56	17
57	27
58	71
59	72
60	77

n	a(n)
1	0
2	1
3	10
4	11
5	100
6	101
7	102
8	12
9	20
10	21
11	22
12	112
13	120
14	103
15	13
16	30
17	31
18	33
19	113
20	123
21	23
22	32
23	122
24	121
25	110
26	104
27	14
28	40
29	41
30	44
31	114
32	124
33	24
34	42
35	142
36	125
37	15
38	25
39	51
40	52
41	55
42	152
43	105
44	50
45	106
46	56
47	16
48	61
49	66
50	116
51	126
52	26
53	62
54	162
55	127
56	17
57	27
58	71
59	72
60	77