A299402 - cp's OEIS frontend

A299402 Lexicographic first sequence of positive integers such that a(n)*a(n+1) has a digit 2, and no term occurs twice.

n	a(n)
1	1
2	2
3	6
4	4
5	3
6	7
7	16
8	8
9	9
10	14
11	13
12	17
13	12
14	10
15	20
16	11
17	19
18	15
19	18
20	24
21	5
22	25
23	21
24	22
25	26
26	27
27	23
28	34
29	28
30	29
31	32
32	31
33	33
34	37
35	35
36	36
37	42
38	30
39	40
40	38
41	39
42	48
43	43
44	44
45	46
46	45
47	47
48	41
49	49
50	50
51	51
52	52
53	53
54	54
55	55
56	59
57	58
58	56
59	57
60	60
61	62
62	61
63	66
64	64
65	63
66	67
67	69
68	68
69	65
70	80
71	74
72	71
73	72
74	73
75	77
76	76
77	70
78	75
79	79
80	78
81	84
82	83
83	81
84	82
85	86
86	87
87	95
88	96
89	92

[1, 2, 6, 4, 3, 7, 16, 8, 9, 14, 13, 17, 12, 10, 20, 11, 19, 15, 18, 24, 5, 25, 21, 22, 26, 27, 23, 34, 28, 29, 32, 31, 33, 37, 35, 36, 42, 30, 40, 38, 39, 48, 43, 44, 46, 45, 47, 41, 49, 50, 51, 52, 53, 54, 55, 59, 58, 56, 57, 60, 62, 61, 66, 64, 63, 67, 69, 68, 65, 80, 74, 71, 72, 73, 77, 76, 70, 75, 79, 78, 84, 83, 81, 82, 86, 87, 95, 96, 92]

cp's OEIS Frontend

A299402 Lexicographic first sequence of positive integers such that a(n)*a(n+1) has a digit 2, and no term occurs twice.

Table of values

List of values

n	a(n)
1	1
2	2
3	6
4	4
5	3
6	7
7	16
8	8
9	9
10	14
11	13
12	17
13	12
14	10
15	20
16	11
17	19
18	15
19	18
20	24
21	5
22	25
23	21
24	22
25	26
26	27
27	23
28	34
29	28
30	29
31	32
32	31
33	33
34	37
35	35
36	36
37	42
38	30
39	40
40	38
41	39
42	48
43	43
44	44
45	46
46	45
47	47
48	41
49	49
50	50
51	51
52	52
53	53
54	54
55	55
56	59
57	58
58	56
59	57
60	60
61	62
62	61
63	66
64	64
65	63
66	67
67	69
68	68
69	65
70	80
71	74
72	71
73	72
74	73
75	77
76	76
77	70
78	75
79	79
80	78
81	84
82	83
83	81
84	82
85	86
86	87
87	95
88	96
89	92

n	a(n)
1	1
2	2
3	6
4	4
5	3
6	7
7	16
8	8
9	9
10	14
11	13
12	17
13	12
14	10
15	20
16	11
17	19
18	15
19	18
20	24
21	5
22	25
23	21
24	22
25	26
26	27
27	23
28	34
29	28
30	29
31	32
32	31
33	33
34	37
35	35
36	36
37	42
38	30
39	40
40	38
41	39
42	48
43	43
44	44
45	46
46	45
47	47
48	41
49	49
50	50
51	51
52	52
53	53
54	54
55	55
56	59
57	58
58	56
59	57
60	60
61	62
62	61
63	66
64	64
65	63
66	67
67	69
68	68
69	65
70	80
71	74
72	71
73	72
74	73
75	77
76	76
77	70
78	75
79	79
80	78
81	84
82	83
83	81
84	82
85	86
86	87
87	95
88	96
89	92

n	a(n)
1	1
2	2
3	6
4	4
5	3
6	7
7	16
8	8
9	9
10	14
11	13
12	17
13	12
14	10
15	20
16	11
17	19
18	15
19	18
20	24
21	5
22	25
23	21
24	22
25	26
26	27
27	23
28	34
29	28
30	29
31	32
32	31
33	33
34	37
35	35
36	36
37	42
38	30
39	40
40	38
41	39
42	48
43	43
44	44
45	46
46	45
47	47
48	41
49	49
50	50
51	51
52	52
53	53
54	54
55	55
56	59
57	58
58	56
59	57
60	60
61	62
62	61
63	66
64	64
65	63
66	67
67	69
68	68
69	65
70	80
71	74
72	71
73	72
74	73
75	77
76	76
77	70
78	75
79	79
80	78
81	84
82	83
83	81
84	82
85	86
86	87
87	95
88	96
89	92