A358098 - cp's OEIS frontend

A358098 a(n) is the largest integer m < n such that m and n have no common digit, or -1 when such integer m does not exist.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	9
12	9
13	9
14	9
15	9
16	9
17	9
18	9
19	8
20	19
21	9
22	19
23	19
24	19
25	19
26	19
27	19
28	19
29	18
30	29
31	29
32	19
33	29
34	29
35	29
36	29
37	29
38	29
39	28
40	39
41	39
42	39
43	29
44	39
45	39
46	39
47	39
48	39
49	38
50	49
51	49
52	49
53	49
54	39
55	49
56	49
57	49
58	49
59	48
60	59
61	59
62	59
63	59
64	59
65	49
66	59
67	59
68	59
69	58
70	69
71	69
72	69
73	69
74	69
75	69
76	59
77	69
78	69
79	68
80	79

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 19, 9, 19, 19, 19, 19, 19, 19, 19, 18, 29, 29, 19, 29, 29, 29, 29, 29, 29, 28, 39, 39, 39, 29, 39, 39, 39, 39, 39, 38, 49, 49, 49, 49, 39, 49, 49, 49, 49, 48, 59, 59, 59, 59, 59, 49, 59, 59, 59, 58, 69, 69, 69, 69, 69, 69, 59, 69, 69, 68, 79]

cp's OEIS Frontend

A358098 a(n) is the largest integer m < n such that m and n have no common digit, or -1 when such integer m does not exist.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	9
12	9
13	9
14	9
15	9
16	9
17	9
18	9
19	8
20	19
21	9
22	19
23	19
24	19
25	19
26	19
27	19
28	19
29	18
30	29
31	29
32	19
33	29
34	29
35	29
36	29
37	29
38	29
39	28
40	39
41	39
42	39
43	29
44	39
45	39
46	39
47	39
48	39
49	38
50	49
51	49
52	49
53	49
54	39
55	49
56	49
57	49
58	49
59	48
60	59
61	59
62	59
63	59
64	59
65	49
66	59
67	59
68	59
69	58
70	69
71	69
72	69
73	69
74	69
75	69
76	59
77	69
78	69
79	68
80	79

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	9
12	9
13	9
14	9
15	9
16	9
17	9
18	9
19	8
20	19
21	9
22	19
23	19
24	19
25	19
26	19
27	19
28	19
29	18
30	29
31	29
32	19
33	29
34	29
35	29
36	29
37	29
38	29
39	28
40	39
41	39
42	39
43	29
44	39
45	39
46	39
47	39
48	39
49	38
50	49
51	49
52	49
53	49
54	39
55	49
56	49
57	49
58	49
59	48
60	59
61	59
62	59
63	59
64	59
65	49
66	59
67	59
68	59
69	58
70	69
71	69
72	69
73	69
74	69
75	69
76	59
77	69
78	69
79	68
80	79

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	9
12	9
13	9
14	9
15	9
16	9
17	9
18	9
19	8
20	19
21	9
22	19
23	19
24	19
25	19
26	19
27	19
28	19
29	18
30	29
31	29
32	19
33	29
34	29
35	29
36	29
37	29
38	29
39	28
40	39
41	39
42	39
43	29
44	39
45	39
46	39
47	39
48	39
49	38
50	49
51	49
52	49
53	49
54	39
55	49
56	49
57	49
58	49
59	48
60	59
61	59
62	59
63	59
64	59
65	49
66	59
67	59
68	59
69	58
70	69
71	69
72	69
73	69
74	69
75	69
76	59
77	69
78	69
79	68
80	79