A299973 - cp's OEIS frontend

A299973 Lexicographic first sequence of positive integers such that a(n) + a(n+1) has a digit 3, and no term occurs twice.

n	a(n)
1	1
2	2
3	11
4	12
5	18
6	5
7	8
8	15
9	16
10	7
11	6
12	17
13	13
14	10
15	3
16	20
17	14
18	9
19	4
20	19
21	24
22	29
23	34
24	39
25	44
26	49
27	54
28	59
29	64
30	66
31	27
32	26
33	37
34	36
35	47
36	46
37	57
38	56
39	67
40	63
41	30
42	23
43	40
44	33
45	50
46	43
47	60
48	53
49	70
50	61
51	22

[1, 2, 11, 12, 18, 5, 8, 15, 16, 7, 6, 17, 13, 10, 3, 20, 14, 9, 4, 19, 24, 29, 34, 39, 44, 49, 54, 59, 64, 66, 27, 26, 37, 36, 47, 46, 57, 56, 67, 63, 30, 23, 40, 33, 50, 43, 60, 53, 70, 61, 22]

cp's OEIS Frontend

A299973 Lexicographic first sequence of positive integers such that a(n) + a(n+1) has a digit 3, and no term occurs twice.

Table of values

List of values

n	a(n)
1	1
2	2
3	11
4	12
5	18
6	5
7	8
8	15
9	16
10	7
11	6
12	17
13	13
14	10
15	3
16	20
17	14
18	9
19	4
20	19
21	24
22	29
23	34
24	39
25	44
26	49
27	54
28	59
29	64
30	66
31	27
32	26
33	37
34	36
35	47
36	46
37	57
38	56
39	67
40	63
41	30
42	23
43	40
44	33
45	50
46	43
47	60
48	53
49	70
50	61
51	22

n	a(n)
1	1
2	2
3	11
4	12
5	18
6	5
7	8
8	15
9	16
10	7
11	6
12	17
13	13
14	10
15	3
16	20
17	14
18	9
19	4
20	19
21	24
22	29
23	34
24	39
25	44
26	49
27	54
28	59
29	64
30	66
31	27
32	26
33	37
34	36
35	47
36	46
37	57
38	56
39	67
40	63
41	30
42	23
43	40
44	33
45	50
46	43
47	60
48	53
49	70
50	61
51	22

n	a(n)
1	1
2	2
3	11
4	12
5	18
6	5
7	8
8	15
9	16
10	7
11	6
12	17
13	13
14	10
15	3
16	20
17	14
18	9
19	4
20	19
21	24
22	29
23	34
24	39
25	44
26	49
27	54
28	59
29	64
30	66
31	27
32	26
33	37
34	36
35	47
36	46
37	57
38	56
39	67
40	63
41	30
42	23
43	40
44	33
45	50
46	43
47	60
48	53
49	70
50	61
51	22