A094450 - cp's OEIS frontend

A094450 Number of iterations of the sum of digits of the divisors of 10^n needed to reach 15.

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

[12, 10, 16, 15, 3, 11, 4, 13, 6, 6, 5, 19, 16, 3, 11, 13, 19, 7, 5, 9, 6, 16, 16, 19, 5, 3, 12, 3, 18, 16, 4, 10, 6, 16, 18, 12, 4, 16, 12, 13, 12, 5, 12, 5, 20, 15, 16, 12, 4, 16, 4, 20, 5, 19, 4, 6, 21, 5, 6, 5, 21, 12, 5, 16, 13, 17, 6, 5, 7, 21, 20, 18, 12, 10, 6, 18, 13, 13, 6, 13, 15]

cp's OEIS Frontend

A094450 Number of iterations of the sum of digits of the divisors of 10^n needed to reach 15.

Table of values

List of values

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

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

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