A299969 - cp's OEIS frontend

A299969 Lexicographic first sequence of nonnegative integers such that a(n) + a(n+1) has a digit 9, and no term occurs twice.

n	a(n)
0	0
1	9
2	10
3	19
4	20
5	29
6	30
7	39
8	40
9	49
10	41
11	8
12	1
13	18
14	11
15	28
16	21
17	38
18	31
19	48
20	42
21	7
22	2
23	17
24	12
25	27
26	22
27	37
28	32
29	47
30	43
31	6
32	3
33	16
34	13
35	26
36	23
37	36
38	33
39	46
40	44
41	5
42	4
43	15
44	14
45	25
46	24
47	35
48	34
49	45
50	50
51	59
52	60
53	69
54	70
55	79
56	80
57	89
58	90
59	99
60	91
61	58
62	51
63	68
64	61
65	78
66	71
67	88
68	81
69	98
70	92
71	57
72	52
73	67
74	62
75	77
76	72
77	87
78	82
79	97
80	93
81	56
82	53
83	66
84	63
85	76
86	73
87	86
88	83
89	96
90	94

[0, 9, 10, 19, 20, 29, 30, 39, 40, 49, 41, 8, 1, 18, 11, 28, 21, 38, 31, 48, 42, 7, 2, 17, 12, 27, 22, 37, 32, 47, 43, 6, 3, 16, 13, 26, 23, 36, 33, 46, 44, 5, 4, 15, 14, 25, 24, 35, 34, 45, 50, 59, 60, 69, 70, 79, 80, 89, 90, 99, 91, 58, 51, 68, 61, 78, 71, 88, 81, 98, 92, 57, 52, 67, 62, 77, 72, 87, 82, 97, 93, 56, 53, 66, 63, 76, 73, 86, 83, 96, 94]

cp's OEIS Frontend

A299969 Lexicographic first sequence of nonnegative integers such that a(n) + a(n+1) has a digit 9, and no term occurs twice.

Table of values

List of values

n	a(n)
0	0
1	9
2	10
3	19
4	20
5	29
6	30
7	39
8	40
9	49
10	41
11	8
12	1
13	18
14	11
15	28
16	21
17	38
18	31
19	48
20	42
21	7
22	2
23	17
24	12
25	27
26	22
27	37
28	32
29	47
30	43
31	6
32	3
33	16
34	13
35	26
36	23
37	36
38	33
39	46
40	44
41	5
42	4
43	15
44	14
45	25
46	24
47	35
48	34
49	45
50	50
51	59
52	60
53	69
54	70
55	79
56	80
57	89
58	90
59	99
60	91
61	58
62	51
63	68
64	61
65	78
66	71
67	88
68	81
69	98
70	92
71	57
72	52
73	67
74	62
75	77
76	72
77	87
78	82
79	97
80	93
81	56
82	53
83	66
84	63
85	76
86	73
87	86
88	83
89	96
90	94

n	a(n)
0	0
1	9
2	10
3	19
4	20
5	29
6	30
7	39
8	40
9	49
10	41
11	8
12	1
13	18
14	11
15	28
16	21
17	38
18	31
19	48
20	42
21	7
22	2
23	17
24	12
25	27
26	22
27	37
28	32
29	47
30	43
31	6
32	3
33	16
34	13
35	26
36	23
37	36
38	33
39	46
40	44
41	5
42	4
43	15
44	14
45	25
46	24
47	35
48	34
49	45
50	50
51	59
52	60
53	69
54	70
55	79
56	80
57	89
58	90
59	99
60	91
61	58
62	51
63	68
64	61
65	78
66	71
67	88
68	81
69	98
70	92
71	57
72	52
73	67
74	62
75	77
76	72
77	87
78	82
79	97
80	93
81	56
82	53
83	66
84	63
85	76
86	73
87	86
88	83
89	96
90	94

n	a(n)
0	0
1	9
2	10
3	19
4	20
5	29
6	30
7	39
8	40
9	49
10	41
11	8
12	1
13	18
14	11
15	28
16	21
17	38
18	31
19	48
20	42
21	7
22	2
23	17
24	12
25	27
26	22
27	37
28	32
29	47
30	43
31	6
32	3
33	16
34	13
35	26
36	23
37	36
38	33
39	46
40	44
41	5
42	4
43	15
44	14
45	25
46	24
47	35
48	34
49	45
50	50
51	59
52	60
53	69
54	70
55	79
56	80
57	89
58	90
59	99
60	91
61	58
62	51
63	68
64	61
65	78
66	71
67	88
68	81
69	98
70	92
71	57
72	52
73	67
74	62
75	77
76	72
77	87
78	82
79	97
80	93
81	56
82	53
83	66
84	63
85	76
86	73
87	86
88	83
89	96
90	94