A303948 - cp's OEIS frontend

A303948 A fractal-like sequence: erasing all pairs of consecutive terms that have at least one digit in common leaves the sequence unchanged.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	11
12	20
13	12
14	30
15	13
16	22
17	21
18	33
19	23
20	10
21	24
22	14
23	25
24	15
25	26
26	16
27	27
28	17
29	28
30	18
31	29
32	19
33	32
34	31
35	40
36	34
37	11
38	20
39	35
40	36
41	12
42	30
43	41
44	42
45	13
46	22
47	37
48	38
49	21
50	33
51	44
52	43
53	50
54	45
55	23
56	10
57	24
58	39
59	49
60	51
61	52
62	14
63	25
64	46
65	47
66	15
67	26
68	48
69	54
70	16
71	27
72	53
73	55
74	17
75	28

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

cp's OEIS Frontend

A303948 A fractal-like sequence: erasing all pairs of consecutive terms that have at least one digit in common leaves the sequence unchanged.

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	11
12	20
13	12
14	30
15	13
16	22
17	21
18	33
19	23
20	10
21	24
22	14
23	25
24	15
25	26
26	16
27	27
28	17
29	28
30	18
31	29
32	19
33	32
34	31
35	40
36	34
37	11
38	20
39	35
40	36
41	12
42	30
43	41
44	42
45	13
46	22
47	37
48	38
49	21
50	33
51	44
52	43
53	50
54	45
55	23
56	10
57	24
58	39
59	49
60	51
61	52
62	14
63	25
64	46
65	47
66	15
67	26
68	48
69	54
70	16
71	27
72	53
73	55
74	17
75	28

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	11
12	20
13	12
14	30
15	13
16	22
17	21
18	33
19	23
20	10
21	24
22	14
23	25
24	15
25	26
26	16
27	27
28	17
29	28
30	18
31	29
32	19
33	32
34	31
35	40
36	34
37	11
38	20
39	35
40	36
41	12
42	30
43	41
44	42
45	13
46	22
47	37
48	38
49	21
50	33
51	44
52	43
53	50
54	45
55	23
56	10
57	24
58	39
59	49
60	51
61	52
62	14
63	25
64	46
65	47
66	15
67	26
68	48
69	54
70	16
71	27
72	53
73	55
74	17
75	28

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	11
12	20
13	12
14	30
15	13
16	22
17	21
18	33
19	23
20	10
21	24
22	14
23	25
24	15
25	26
26	16
27	27
28	17
29	28
30	18
31	29
32	19
33	32
34	31
35	40
36	34
37	11
38	20
39	35
40	36
41	12
42	30
43	41
44	42
45	13
46	22
47	37
48	38
49	21
50	33
51	44
52	43
53	50
54	45
55	23
56	10
57	24
58	39
59	49
60	51
61	52
62	14
63	25
64	46
65	47
66	15
67	26
68	48
69	54
70	16
71	27
72	53
73	55
74	17
75	28