A337819 - cp's OEIS frontend

A337819 a(n) is the smallest number k for which k*d is a Niven number, for any divisor d of n, n >= 1.

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

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 10, 1, 9, 3, 2, 3, 6, 1, 6, 1, 1, 10, 9, 1, 2, 9, 1, 3, 9, 2, 12, 9, 10, 6, 6, 1, 3, 6, 9, 1, 10, 3, 12, 10, 2, 9, 9, 3, 9, 2, 6, 9, 18, 1, 10, 9, 6, 9, 9, 2, 12, 18, 1, 9, 12, 10, 3, 6, 9, 6, 18, 1, 7, 3, 2, 9, 10, 9, 9, 9, 1, 10]

cp's OEIS Frontend

A337819 a(n) is the smallest number k for which k*d is a Niven number, for any divisor d of n, n >= 1.

Table of values

List of values

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

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

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