A303294 - cp's OEIS frontend

A303294 a(n) is the least positive integer not yet in the sequence which shares a digit with either a(n-3) or a(n-2) (or with both), but shares no digit with a(n-1); a(1)=0, a(2)=1, a(3)=2.

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

[0, 1, 2, 10, 22, 11, 20, 13, 24, 3, 4, 12, 30, 14, 23, 15, 26, 5, 6, 21, 35, 16, 25, 17, 28, 7, 8, 27, 18, 29, 31, 9, 32, 19, 33, 41, 36, 40, 37, 42, 38, 44, 39, 45, 63, 47, 50, 34, 51, 43, 52, 46, 53, 48, 55, 49, 56, 74, 58, 60, 54, 61, 57, 62, 59]

cp's OEIS Frontend

A303294 a(n) is the least positive integer not yet in the sequence which shares a digit with either a(n-3) or a(n-2) (or with both), but shares no digit with a(n-1); a(1)=0, a(2)=1, a(3)=2.

Table of values

List of values

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

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

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