A298978 - cp's OEIS frontend

A298978 Lexicographic first sequence of positive integers such that a(n)*a(n+1) has a digit 8, and no term occurs twice.

n	a(n)
1	1
2	8
3	6
4	3
5	16
6	5
7	17
8	4
9	2
10	9
11	12
12	7
13	14
14	13
15	22
16	19
17	15
18	32
19	24
20	20
21	29
22	27
23	18
24	10
25	28
26	11
27	26
28	23
29	21
30	38
31	31
32	35
33	25
34	33
35	36
36	30
37	46
38	40
39	37
40	34
41	42
42	39
43	47
44	44
45	41
46	45
47	53
48	54
49	52
50	49
51	58
52	48
53	51
54	55
55	56
56	43
57	60
58	63
59	61
60	62
61	59
62	65
63	69
64	70
65	64
66	57
67	50
68	76
69	68
70	66
71	71
72	73
73	67
74	72
75	74
76	77
77	79
78	82
79	83
80	86
81	78
82	75
83	91
84	80
85	81
86	84
87	87
88	90
89	89

[1, 8, 6, 3, 16, 5, 17, 4, 2, 9, 12, 7, 14, 13, 22, 19, 15, 32, 24, 20, 29, 27, 18, 10, 28, 11, 26, 23, 21, 38, 31, 35, 25, 33, 36, 30, 46, 40, 37, 34, 42, 39, 47, 44, 41, 45, 53, 54, 52, 49, 58, 48, 51, 55, 56, 43, 60, 63, 61, 62, 59, 65, 69, 70, 64, 57, 50, 76, 68, 66, 71, 73, 67, 72, 74, 77, 79, 82, 83, 86, 78, 75, 91, 80, 81, 84, 87, 90, 89]

cp's OEIS Frontend

A298978 Lexicographic first sequence of positive integers such that a(n)*a(n+1) has a digit 8, and no term occurs twice.

Table of values

List of values

n	a(n)
1	1
2	8
3	6
4	3
5	16
6	5
7	17
8	4
9	2
10	9
11	12
12	7
13	14
14	13
15	22
16	19
17	15
18	32
19	24
20	20
21	29
22	27
23	18
24	10
25	28
26	11
27	26
28	23
29	21
30	38
31	31
32	35
33	25
34	33
35	36
36	30
37	46
38	40
39	37
40	34
41	42
42	39
43	47
44	44
45	41
46	45
47	53
48	54
49	52
50	49
51	58
52	48
53	51
54	55
55	56
56	43
57	60
58	63
59	61
60	62
61	59
62	65
63	69
64	70
65	64
66	57
67	50
68	76
69	68
70	66
71	71
72	73
73	67
74	72
75	74
76	77
77	79
78	82
79	83
80	86
81	78
82	75
83	91
84	80
85	81
86	84
87	87
88	90
89	89

n	a(n)
1	1
2	8
3	6
4	3
5	16
6	5
7	17
8	4
9	2
10	9
11	12
12	7
13	14
14	13
15	22
16	19
17	15
18	32
19	24
20	20
21	29
22	27
23	18
24	10
25	28
26	11
27	26
28	23
29	21
30	38
31	31
32	35
33	25
34	33
35	36
36	30
37	46
38	40
39	37
40	34
41	42
42	39
43	47
44	44
45	41
46	45
47	53
48	54
49	52
50	49
51	58
52	48
53	51
54	55
55	56
56	43
57	60
58	63
59	61
60	62
61	59
62	65
63	69
64	70
65	64
66	57
67	50
68	76
69	68
70	66
71	71
72	73
73	67
74	72
75	74
76	77
77	79
78	82
79	83
80	86
81	78
82	75
83	91
84	80
85	81
86	84
87	87
88	90
89	89

n	a(n)
1	1
2	8
3	6
4	3
5	16
6	5
7	17
8	4
9	2
10	9
11	12
12	7
13	14
14	13
15	22
16	19
17	15
18	32
19	24
20	20
21	29
22	27
23	18
24	10
25	28
26	11
27	26
28	23
29	21
30	38
31	31
32	35
33	25
34	33
35	36
36	30
37	46
38	40
39	37
40	34
41	42
42	39
43	47
44	44
45	41
46	45
47	53
48	54
49	52
50	49
51	58
52	48
53	51
54	55
55	56
56	43
57	60
58	63
59	61
60	62
61	59
62	65
63	69
64	70
65	64
66	57
67	50
68	76
69	68
70	66
71	71
72	73
73	67
74	72
75	74
76	77
77	79
78	82
79	83
80	86
81	78
82	75
83	91
84	80
85	81
86	84
87	87
88	90
89	89