A299975 - cp's OEIS frontend

A299975 Lexicographic first sequence of positive integers such that a(n) + a(n+1) has a digit 5, and no term occurs twice.

n	a(n)
1	1
2	4
3	11
4	14
5	21
6	24
7	26
8	9
9	6
10	19
11	16
12	29
13	22
14	3
15	2
16	13
17	12
18	23
19	27
20	8
21	7
22	18
23	17
24	28
25	25
26	10
27	5
28	20
29	15
30	30
31	35
32	40
33	45
34	50
35	55
36	60
37	65
38	70
39	75
40	76
41	39
42	36
43	49
44	46
45	59
46	56
47	69
48	66
49	79
50	71
51	34
52	31
53	44
54	41
55	54
56	51
57	64
58	61
59	74
60	77
61	38
62	37
63	48
64	47
65	58
66	57
67	68
68	67
69	78
70	72
71	33
72	32
73	43
74	42
75	53
76	52
77	63
78	62
79	73
80	80
81	85
82	90
83	95
84	100
85	105
86	110
87	115
88	120
89	125

[1, 4, 11, 14, 21, 24, 26, 9, 6, 19, 16, 29, 22, 3, 2, 13, 12, 23, 27, 8, 7, 18, 17, 28, 25, 10, 5, 20, 15, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 76, 39, 36, 49, 46, 59, 56, 69, 66, 79, 71, 34, 31, 44, 41, 54, 51, 64, 61, 74, 77, 38, 37, 48, 47, 58, 57, 68, 67, 78, 72, 33, 32, 43, 42, 53, 52, 63, 62, 73, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125]

cp's OEIS Frontend

A299975 Lexicographic first sequence of positive integers such that a(n) + a(n+1) has a digit 5, and no term occurs twice.

Table of values

List of values

n	a(n)
1	1
2	4
3	11
4	14
5	21
6	24
7	26
8	9
9	6
10	19
11	16
12	29
13	22
14	3
15	2
16	13
17	12
18	23
19	27
20	8
21	7
22	18
23	17
24	28
25	25
26	10
27	5
28	20
29	15
30	30
31	35
32	40
33	45
34	50
35	55
36	60
37	65
38	70
39	75
40	76
41	39
42	36
43	49
44	46
45	59
46	56
47	69
48	66
49	79
50	71
51	34
52	31
53	44
54	41
55	54
56	51
57	64
58	61
59	74
60	77
61	38
62	37
63	48
64	47
65	58
66	57
67	68
68	67
69	78
70	72
71	33
72	32
73	43
74	42
75	53
76	52
77	63
78	62
79	73
80	80
81	85
82	90
83	95
84	100
85	105
86	110
87	115
88	120
89	125

n	a(n)
1	1
2	4
3	11
4	14
5	21
6	24
7	26
8	9
9	6
10	19
11	16
12	29
13	22
14	3
15	2
16	13
17	12
18	23
19	27
20	8
21	7
22	18
23	17
24	28
25	25
26	10
27	5
28	20
29	15
30	30
31	35
32	40
33	45
34	50
35	55
36	60
37	65
38	70
39	75
40	76
41	39
42	36
43	49
44	46
45	59
46	56
47	69
48	66
49	79
50	71
51	34
52	31
53	44
54	41
55	54
56	51
57	64
58	61
59	74
60	77
61	38
62	37
63	48
64	47
65	58
66	57
67	68
68	67
69	78
70	72
71	33
72	32
73	43
74	42
75	53
76	52
77	63
78	62
79	73
80	80
81	85
82	90
83	95
84	100
85	105
86	110
87	115
88	120
89	125

n	a(n)
1	1
2	4
3	11
4	14
5	21
6	24
7	26
8	9
9	6
10	19
11	16
12	29
13	22
14	3
15	2
16	13
17	12
18	23
19	27
20	8
21	7
22	18
23	17
24	28
25	25
26	10
27	5
28	20
29	15
30	30
31	35
32	40
33	45
34	50
35	55
36	60
37	65
38	70
39	75
40	76
41	39
42	36
43	49
44	46
45	59
46	56
47	69
48	66
49	79
50	71
51	34
52	31
53	44
54	41
55	54
56	51
57	64
58	61
59	74
60	77
61	38
62	37
63	48
64	47
65	58
66	57
67	68
68	67
69	78
70	72
71	33
72	32
73	43
74	42
75	53
76	52
77	63
78	62
79	73
80	80
81	85
82	90
83	95
84	100
85	105
86	110
87	115
88	120
89	125