A374015 - cp's OEIS frontend

A374015 Residue modulo 5 of n! divided by the highest power of 10 which divides n!.

n	a(n)
0	1
1	1
2	2
3	1
4	4
5	2
6	2
7	4
8	2
9	3
10	3
11	3
12	1
13	3
14	2
15	3
16	3
17	1
18	3
19	2
20	4
21	4
22	3
23	4
24	1
25	4
26	4
27	3
28	4
29	1
30	3
31	3
32	1
33	3
34	2
35	2
36	2
37	4
38	2
39	3
40	2
41	2
42	4
43	2
44	3
45	1
46	1
47	2
48	1
49	4
50	2
51	2
52	4
53	2
54	3
55	4
56	4
57	3
58	4
59	1
60	1
61	1
62	2
63	1
64	4
65	1
66	1
67	2
68	1
69	4
70	3
71	3
72	1
73	3
74	2
75	4
76	4
77	3
78	4
79	1
80	3
81	3
82	1
83	3
84	2
85	2
86	2
87	4
88	2
89	3
90	2
91	2
92	4
93	2
94	3
95	1
96	1
97	2
98	1
99	4
100	4
101	4
102	3
103	4
104	1
105	3

[1, 1, 2, 1, 4, 2, 2, 4, 2, 3, 3, 3, 1, 3, 2, 3, 3, 1, 3, 2, 4, 4, 3, 4, 1, 4, 4, 3, 4, 1, 3, 3, 1, 3, 2, 2, 2, 4, 2, 3, 2, 2, 4, 2, 3, 1, 1, 2, 1, 4, 2, 2, 4, 2, 3, 4, 4, 3, 4, 1, 1, 1, 2, 1, 4, 1, 1, 2, 1, 4, 3, 3, 1, 3, 2, 4, 4, 3, 4, 1, 3, 3, 1, 3, 2, 2, 2, 4, 2, 3, 2, 2, 4, 2, 3, 1, 1, 2, 1, 4, 4, 4, 3, 4, 1, 3]

cp's OEIS Frontend

A374015 Residue modulo 5 of n! divided by the highest power of 10 which divides n!.

Table of values

List of values

n	a(n)
0	1
1	1
2	2
3	1
4	4
5	2
6	2
7	4
8	2
9	3
10	3
11	3
12	1
13	3
14	2
15	3
16	3
17	1
18	3
19	2
20	4
21	4
22	3
23	4
24	1
25	4
26	4
27	3
28	4
29	1
30	3
31	3
32	1
33	3
34	2
35	2
36	2
37	4
38	2
39	3
40	2
41	2
42	4
43	2
44	3
45	1
46	1
47	2
48	1
49	4
50	2
51	2
52	4
53	2
54	3
55	4
56	4
57	3
58	4
59	1
60	1
61	1
62	2
63	1
64	4
65	1
66	1
67	2
68	1
69	4
70	3
71	3
72	1
73	3
74	2
75	4
76	4
77	3
78	4
79	1
80	3
81	3
82	1
83	3
84	2
85	2
86	2
87	4
88	2
89	3
90	2
91	2
92	4
93	2
94	3
95	1
96	1
97	2
98	1
99	4
100	4
101	4
102	3
103	4
104	1
105	3

n	a(n)
0	1
1	1
2	2
3	1
4	4
5	2
6	2
7	4
8	2
9	3
10	3
11	3
12	1
13	3
14	2
15	3
16	3
17	1
18	3
19	2
20	4
21	4
22	3
23	4
24	1
25	4
26	4
27	3
28	4
29	1
30	3
31	3
32	1
33	3
34	2
35	2
36	2
37	4
38	2
39	3
40	2
41	2
42	4
43	2
44	3
45	1
46	1
47	2
48	1
49	4
50	2
51	2
52	4
53	2
54	3
55	4
56	4
57	3
58	4
59	1
60	1
61	1
62	2
63	1
64	4
65	1
66	1
67	2
68	1
69	4
70	3
71	3
72	1
73	3
74	2
75	4
76	4
77	3
78	4
79	1
80	3
81	3
82	1
83	3
84	2
85	2
86	2
87	4
88	2
89	3
90	2
91	2
92	4
93	2
94	3
95	1
96	1
97	2
98	1
99	4
100	4
101	4
102	3
103	4
104	1
105	3

n	a(n)
0	1
1	1
2	2
3	1
4	4
5	2
6	2
7	4
8	2
9	3
10	3
11	3
12	1
13	3
14	2
15	3
16	3
17	1
18	3
19	2
20	4
21	4
22	3
23	4
24	1
25	4
26	4
27	3
28	4
29	1
30	3
31	3
32	1
33	3
34	2
35	2
36	2
37	4
38	2
39	3
40	2
41	2
42	4
43	2
44	3
45	1
46	1
47	2
48	1
49	4
50	2
51	2
52	4
53	2
54	3
55	4
56	4
57	3
58	4
59	1
60	1
61	1
62	2
63	1
64	4
65	1
66	1
67	2
68	1
69	4
70	3
71	3
72	1
73	3
74	2
75	4
76	4
77	3
78	4
79	1
80	3
81	3
82	1
83	3
84	2
85	2
86	2
87	4
88	2
89	3
90	2
91	2
92	4
93	2
94	3
95	1
96	1
97	2
98	1
99	4
100	4
101	4
102	3
103	4
104	1
105	3