A302388 - cp's OEIS frontend

A302388 a(n) is the least positive integer not yet in the sequence in which the largest digit of a(n-3) appears among its digits; a(1)=1, a(2)=2, a(3)=3.

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

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

cp's OEIS Frontend

A302388 a(n) is the least positive integer not yet in the sequence in which the largest digit of a(n-3) appears among its digits; a(1)=1, a(2)=2, a(3)=3.

Table of values

List of values

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

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

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