A289286 - cp's OEIS frontend

A289286 Starting with a(1) = 1, a(n) = smallest nonnegative integer not yet in the sequence such that the last digit of a(n-1) plus the first digit of a(n) is equal to 8. The digit 0 is not allowed.

n	a(n)
1	1
2	7
3	11
4	71
5	72
6	6
7	2
8	61
9	73
10	5
11	3
12	51
13	74
14	4
15	41
16	75
17	31
18	76
19	21
20	77
21	12
22	62
23	63
24	52
25	64
26	42
27	65
28	32
29	66
30	22
31	67
32	13
33	53
34	54
35	43
36	55
37	33
38	56
39	23
40	57
41	14
42	44
43	45
44	34
45	46
46	24
47	47
48	15
49	35
50	36
51	25
52	37
53	16
54	26
55	27
56	17
57	18

[1, 7, 11, 71, 72, 6, 2, 61, 73, 5, 3, 51, 74, 4, 41, 75, 31, 76, 21, 77, 12, 62, 63, 52, 64, 42, 65, 32, 66, 22, 67, 13, 53, 54, 43, 55, 33, 56, 23, 57, 14, 44, 45, 34, 46, 24, 47, 15, 35, 36, 25, 37, 16, 26, 27, 17, 18]

cp's OEIS Frontend

A289286 Starting with a(1) = 1, a(n) = smallest nonnegative integer not yet in the sequence such that the last digit of a(n-1) plus the first digit of a(n) is equal to 8. The digit 0 is not allowed.

Table of values

List of values

n	a(n)
1	1
2	7
3	11
4	71
5	72
6	6
7	2
8	61
9	73
10	5
11	3
12	51
13	74
14	4
15	41
16	75
17	31
18	76
19	21
20	77
21	12
22	62
23	63
24	52
25	64
26	42
27	65
28	32
29	66
30	22
31	67
32	13
33	53
34	54
35	43
36	55
37	33
38	56
39	23
40	57
41	14
42	44
43	45
44	34
45	46
46	24
47	47
48	15
49	35
50	36
51	25
52	37
53	16
54	26
55	27
56	17
57	18

n	a(n)
1	1
2	7
3	11
4	71
5	72
6	6
7	2
8	61
9	73
10	5
11	3
12	51
13	74
14	4
15	41
16	75
17	31
18	76
19	21
20	77
21	12
22	62
23	63
24	52
25	64
26	42
27	65
28	32
29	66
30	22
31	67
32	13
33	53
34	54
35	43
36	55
37	33
38	56
39	23
40	57
41	14
42	44
43	45
44	34
45	46
46	24
47	47
48	15
49	35
50	36
51	25
52	37
53	16
54	26
55	27
56	17
57	18

n	a(n)
1	1
2	7
3	11
4	71
5	72
6	6
7	2
8	61
9	73
10	5
11	3
12	51
13	74
14	4
15	41
16	75
17	31
18	76
19	21
20	77
21	12
22	62
23	63
24	52
25	64
26	42
27	65
28	32
29	66
30	22
31	67
32	13
33	53
34	54
35	43
36	55
37	33
38	56
39	23
40	57
41	14
42	44
43	45
44	34
45	46
46	24
47	47
48	15
49	35
50	36
51	25
52	37
53	16
54	26
55	27
56	17
57	18