A330358 - cp's OEIS frontend

A330358 a(n) = n mod 5 + n mod 25 + ... + n mod 5^k, where 5^k <= n < 5^(k+1).

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	2
8	3
9	4
10	0
11	1
12	2
13	3
14	4
15	0
16	1
17	2
18	3
19	4
20	0
21	1
22	2
23	3
24	4
25	0
26	2
27	4
28	6
29	8
30	5
31	7
32	9
33	11
34	13
35	10
36	12
37	14
38	16
39	18
40	15
41	17
42	19
43	21
44	23
45	20
46	22
47	24
48	26
49	28
50	0
51	2
52	4
53	6
54	8
55	5
56	7
57	9
58	11
59	13
60	10
61	12
62	14
63	16
64	18
65	15
66	17
67	19
68	21
69	23
70	20
71	22
72	24
73	26
74	28
75	0
76	2
77	4
78	6
79	8
80	5
81	7
82	9
83	11
84	13
85	10

[0, 0, 0, 0, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 2, 4, 6, 8, 5, 7, 9, 11, 13, 10, 12, 14, 16, 18, 15, 17, 19, 21, 23, 20, 22, 24, 26, 28, 0, 2, 4, 6, 8, 5, 7, 9, 11, 13, 10, 12, 14, 16, 18, 15, 17, 19, 21, 23, 20, 22, 24, 26, 28, 0, 2, 4, 6, 8, 5, 7, 9, 11, 13, 10]

cp's OEIS Frontend

A330358 a(n) = n mod 5 + n mod 25 + ... + n mod 5^k, where 5^k <= n < 5^(k+1).

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	2
8	3
9	4
10	0
11	1
12	2
13	3
14	4
15	0
16	1
17	2
18	3
19	4
20	0
21	1
22	2
23	3
24	4
25	0
26	2
27	4
28	6
29	8
30	5
31	7
32	9
33	11
34	13
35	10
36	12
37	14
38	16
39	18
40	15
41	17
42	19
43	21
44	23
45	20
46	22
47	24
48	26
49	28
50	0
51	2
52	4
53	6
54	8
55	5
56	7
57	9
58	11
59	13
60	10
61	12
62	14
63	16
64	18
65	15
66	17
67	19
68	21
69	23
70	20
71	22
72	24
73	26
74	28
75	0
76	2
77	4
78	6
79	8
80	5
81	7
82	9
83	11
84	13
85	10

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	2
8	3
9	4
10	0
11	1
12	2
13	3
14	4
15	0
16	1
17	2
18	3
19	4
20	0
21	1
22	2
23	3
24	4
25	0
26	2
27	4
28	6
29	8
30	5
31	7
32	9
33	11
34	13
35	10
36	12
37	14
38	16
39	18
40	15
41	17
42	19
43	21
44	23
45	20
46	22
47	24
48	26
49	28
50	0
51	2
52	4
53	6
54	8
55	5
56	7
57	9
58	11
59	13
60	10
61	12
62	14
63	16
64	18
65	15
66	17
67	19
68	21
69	23
70	20
71	22
72	24
73	26
74	28
75	0
76	2
77	4
78	6
79	8
80	5
81	7
82	9
83	11
84	13
85	10

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	2
8	3
9	4
10	0
11	1
12	2
13	3
14	4
15	0
16	1
17	2
18	3
19	4
20	0
21	1
22	2
23	3
24	4
25	0
26	2
27	4
28	6
29	8
30	5
31	7
32	9
33	11
34	13
35	10
36	12
37	14
38	16
39	18
40	15
41	17
42	19
43	21
44	23
45	20
46	22
47	24
48	26
49	28
50	0
51	2
52	4
53	6
54	8
55	5
56	7
57	9
58	11
59	13
60	10
61	12
62	14
63	16
64	18
65	15
66	17
67	19
68	21
69	23
70	20
71	22
72	24
73	26
74	28
75	0
76	2
77	4
78	6
79	8
80	5
81	7
82	9
83	11
84	13
85	10