A338191 - cp's OEIS frontend

A338191 a(1) = 1, a(n) is the least m not already in a(n) such that m mod 10 = decimal digital root of a(n - 1).

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

[1, 11, 2, 12, 3, 13, 4, 14, 5, 15, 6, 16, 7, 17, 8, 18, 9, 19, 21, 23, 25, 27, 29, 22, 24, 26, 28, 31, 34, 37, 41, 35, 38, 32, 45, 39, 33, 36, 49, 44, 48, 43, 47, 42, 46, 51, 56, 52, 57, 53, 58, 54, 59, 55, 61, 67, 64, 71, 68, 65, 62, 78, 66, 63, 69, 76, 74, 72]

cp's OEIS Frontend

A338191 a(1) = 1, a(n) is the least m not already in a(n) such that m mod 10 = decimal digital root of a(n - 1).

Table of values

List of values

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

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

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