A217445 - cp's OEIS frontend

A217445 Numbers n such that n! has the same number of terminating zeros in bases 3 and 4.

n	a(n)
1	1
2	2
3	4
4	5
5	6
6	7
7	10
8	11
9	12
10	13
11	14
12	18
13	19
14	21
15	22
16	23
17	33
18	36
19	37
20	38
21	42
22	43
23	46
24	47
25	51
26	56
27	58
28	59
29	60
30	61
31	62
32	75
33	86
34	88
35	89
36	92
37	100
38	101
39	102
40	103
41	105
42	112
43	113
44	114
45	115
46	120
47	121
48	122
49	124
50	125
51	138
52	139
53	141
54	147
55	153
56	159
57	164
58	166
59	167
60	168

[1, 2, 4, 5, 6, 7, 10, 11, 12, 13, 14, 18, 19, 21, 22, 23, 33, 36, 37, 38, 42, 43, 46, 47, 51, 56, 58, 59, 60, 61, 62, 75, 86, 88, 89, 92, 100, 101, 102, 103, 105, 112, 113, 114, 115, 120, 121, 122, 124, 125, 138, 139, 141, 147, 153, 159, 164, 166, 167, 168]

cp's OEIS Frontend

A217445 Numbers n such that n! has the same number of terminating zeros in bases 3 and 4.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	5
5	6
6	7
7	10
8	11
9	12
10	13
11	14
12	18
13	19
14	21
15	22
16	23
17	33
18	36
19	37
20	38
21	42
22	43
23	46
24	47
25	51
26	56
27	58
28	59
29	60
30	61
31	62
32	75
33	86
34	88
35	89
36	92
37	100
38	101
39	102
40	103
41	105
42	112
43	113
44	114
45	115
46	120
47	121
48	122
49	124
50	125
51	138
52	139
53	141
54	147
55	153
56	159
57	164
58	166
59	167
60	168

n	a(n)
1	1
2	2
3	4
4	5
5	6
6	7
7	10
8	11
9	12
10	13
11	14
12	18
13	19
14	21
15	22
16	23
17	33
18	36
19	37
20	38
21	42
22	43
23	46
24	47
25	51
26	56
27	58
28	59
29	60
30	61
31	62
32	75
33	86
34	88
35	89
36	92
37	100
38	101
39	102
40	103
41	105
42	112
43	113
44	114
45	115
46	120
47	121
48	122
49	124
50	125
51	138
52	139
53	141
54	147
55	153
56	159
57	164
58	166
59	167
60	168

n	a(n)
1	1
2	2
3	4
4	5
5	6
6	7
7	10
8	11
9	12
10	13
11	14
12	18
13	19
14	21
15	22
16	23
17	33
18	36
19	37
20	38
21	42
22	43
23	46
24	47
25	51
26	56
27	58
28	59
29	60
30	61
31	62
32	75
33	86
34	88
35	89
36	92
37	100
38	101
39	102
40	103
41	105
42	112
43	113
44	114
45	115
46	120
47	121
48	122
49	124
50	125
51	138
52	139
53	141
54	147
55	153
56	159
57	164
58	166
59	167
60	168