A357823 - cp's OEIS frontend

A357823 a(n) is the number of bases > 1 where n is not divisible by the sum of its digits.

n	a(n)
1	0
2	0
3	1
4	0
5	3
6	0
7	5
8	1
9	4
10	3
11	9
12	1
13	11
14	9
15	7
16	5
17	15
18	5
19	17
20	7
21	11
22	17
23	21
24	5
25	18
26	20
27	17
28	14
29	27
30	12
31	29
32	16
33	24
34	28
35	24
36	13
37	35
38	33
39	31
40	17
41	39
42	22
43	41
44	33
45	26
46	41
47	45
48	18
49	42
50	34
51	42
52	38
53	51
54	33
55	45
56	35
57	48
58	53
59	57
60	26
61	59
62	57
63	44
64	41
65	52
66	43
67	65
68	56
69	60
70	48

[0, 0, 1, 0, 3, 0, 5, 1, 4, 3, 9, 1, 11, 9, 7, 5, 15, 5, 17, 7, 11, 17, 21, 5, 18, 20, 17, 14, 27, 12, 29, 16, 24, 28, 24, 13, 35, 33, 31, 17, 39, 22, 41, 33, 26, 41, 45, 18, 42, 34, 42, 38, 51, 33, 45, 35, 48, 53, 57, 26, 59, 57, 44, 41, 52, 43, 65, 56, 60, 48]

cp's OEIS Frontend

A357823 a(n) is the number of bases > 1 where n is not divisible by the sum of its digits.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	3
6	0
7	5
8	1
9	4
10	3
11	9
12	1
13	11
14	9
15	7
16	5
17	15
18	5
19	17
20	7
21	11
22	17
23	21
24	5
25	18
26	20
27	17
28	14
29	27
30	12
31	29
32	16
33	24
34	28
35	24
36	13
37	35
38	33
39	31
40	17
41	39
42	22
43	41
44	33
45	26
46	41
47	45
48	18
49	42
50	34
51	42
52	38
53	51
54	33
55	45
56	35
57	48
58	53
59	57
60	26
61	59
62	57
63	44
64	41
65	52
66	43
67	65
68	56
69	60
70	48

n	a(n)
1	0
2	0
3	1
4	0
5	3
6	0
7	5
8	1
9	4
10	3
11	9
12	1
13	11
14	9
15	7
16	5
17	15
18	5
19	17
20	7
21	11
22	17
23	21
24	5
25	18
26	20
27	17
28	14
29	27
30	12
31	29
32	16
33	24
34	28
35	24
36	13
37	35
38	33
39	31
40	17
41	39
42	22
43	41
44	33
45	26
46	41
47	45
48	18
49	42
50	34
51	42
52	38
53	51
54	33
55	45
56	35
57	48
58	53
59	57
60	26
61	59
62	57
63	44
64	41
65	52
66	43
67	65
68	56
69	60
70	48

n	a(n)
1	0
2	0
3	1
4	0
5	3
6	0
7	5
8	1
9	4
10	3
11	9
12	1
13	11
14	9
15	7
16	5
17	15
18	5
19	17
20	7
21	11
22	17
23	21
24	5
25	18
26	20
27	17
28	14
29	27
30	12
31	29
32	16
33	24
34	28
35	24
36	13
37	35
38	33
39	31
40	17
41	39
42	22
43	41
44	33
45	26
46	41
47	45
48	18
49	42
50	34
51	42
52	38
53	51
54	33
55	45
56	35
57	48
58	53
59	57
60	26
61	59
62	57
63	44
64	41
65	52
66	43
67	65
68	56
69	60
70	48