A018799 - cp's OEIS frontend

A018799 Smallest nonnegative integer m such that m! begins with n in base 10.

n	a(n)
1	0
2	2
3	9
4	8
5	7
6	3
7	6
8	14
9	96
10	27
11	22
12	5
13	15
14	42
15	25
16	89
17	69
18	76
19	63
20	16
21	87
22	113
23	54
24	4
25	23
26	30
27	205
28	85
29	34
30	28
31	62
32	164
33	41
34	245
35	17
36	9
37	36
38	128
39	11
40	8
41	185
42	53
43	351
44	73
45	369
46	118
47	12
48	265
49	129
50	7
51	21
52	38
53	235
54	66
55	46
56	258
57	81
58	597
59	279
60	43
61	72
62	13
63	559
64	18
65	203
66	120
67	311

[0, 2, 9, 8, 7, 3, 6, 14, 96, 27, 22, 5, 15, 42, 25, 89, 69, 76, 63, 16, 87, 113, 54, 4, 23, 30, 205, 85, 34, 28, 62, 164, 41, 245, 17, 9, 36, 128, 11, 8, 185, 53, 351, 73, 369, 118, 12, 265, 129, 7, 21, 38, 235, 66, 46, 258, 81, 597, 279, 43, 72, 13, 559, 18, 203, 120, 311]

cp's OEIS Frontend

A018799 Smallest nonnegative integer m such that m! begins with n in base 10.

Table of values

List of values

n	a(n)
1	0
2	2
3	9
4	8
5	7
6	3
7	6
8	14
9	96
10	27
11	22
12	5
13	15
14	42
15	25
16	89
17	69
18	76
19	63
20	16
21	87
22	113
23	54
24	4
25	23
26	30
27	205
28	85
29	34
30	28
31	62
32	164
33	41
34	245
35	17
36	9
37	36
38	128
39	11
40	8
41	185
42	53
43	351
44	73
45	369
46	118
47	12
48	265
49	129
50	7
51	21
52	38
53	235
54	66
55	46
56	258
57	81
58	597
59	279
60	43
61	72
62	13
63	559
64	18
65	203
66	120
67	311

n	a(n)
1	0
2	2
3	9
4	8
5	7
6	3
7	6
8	14
9	96
10	27
11	22
12	5
13	15
14	42
15	25
16	89
17	69
18	76
19	63
20	16
21	87
22	113
23	54
24	4
25	23
26	30
27	205
28	85
29	34
30	28
31	62
32	164
33	41
34	245
35	17
36	9
37	36
38	128
39	11
40	8
41	185
42	53
43	351
44	73
45	369
46	118
47	12
48	265
49	129
50	7
51	21
52	38
53	235
54	66
55	46
56	258
57	81
58	597
59	279
60	43
61	72
62	13
63	559
64	18
65	203
66	120
67	311

n	a(n)
1	0
2	2
3	9
4	8
5	7
6	3
7	6
8	14
9	96
10	27
11	22
12	5
13	15
14	42
15	25
16	89
17	69
18	76
19	63
20	16
21	87
22	113
23	54
24	4
25	23
26	30
27	205
28	85
29	34
30	28
31	62
32	164
33	41
34	245
35	17
36	9
37	36
38	128
39	11
40	8
41	185
42	53
43	351
44	73
45	369
46	118
47	12
48	265
49	129
50	7
51	21
52	38
53	235
54	66
55	46
56	258
57	81
58	597
59	279
60	43
61	72
62	13
63	559
64	18
65	203
66	120
67	311