A358992 - cp's OEIS frontend

A358992 a(n) is the number of digits in the product of the first n odd numbers not divisible by 5.

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	9
10	10
11	12
12	13
13	15
14	16
15	18
16	19
17	21
18	22
19	24
20	26
21	28
22	29
23	31
24	33
25	35
26	36
27	38
28	40
29	42
30	44
31	46
32	48
33	49
34	51
35	53
36	55
37	57
38	59
39	61
40	63
41	65
42	67
43	69
44	71
45	73
46	75
47	77
48	79
49	82
50	84
51	86
52	88
53	90
54	92
55	94
56	96
57	99
58	101
59	103
60	105
61	107
62	109
63	112
64	114
65	116

[1, 1, 1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 15, 16, 18, 19, 21, 22, 24, 26, 28, 29, 31, 33, 35, 36, 38, 40, 42, 44, 46, 48, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 82, 84, 86, 88, 90, 92, 94, 96, 99, 101, 103, 105, 107, 109, 112, 114, 116]

cp's OEIS Frontend

A358992 a(n) is the number of digits in the product of the first n odd numbers not divisible by 5.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	9
10	10
11	12
12	13
13	15
14	16
15	18
16	19
17	21
18	22
19	24
20	26
21	28
22	29
23	31
24	33
25	35
26	36
27	38
28	40
29	42
30	44
31	46
32	48
33	49
34	51
35	53
36	55
37	57
38	59
39	61
40	63
41	65
42	67
43	69
44	71
45	73
46	75
47	77
48	79
49	82
50	84
51	86
52	88
53	90
54	92
55	94
56	96
57	99
58	101
59	103
60	105
61	107
62	109
63	112
64	114
65	116

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	9
10	10
11	12
12	13
13	15
14	16
15	18
16	19
17	21
18	22
19	24
20	26
21	28
22	29
23	31
24	33
25	35
26	36
27	38
28	40
29	42
30	44
31	46
32	48
33	49
34	51
35	53
36	55
37	57
38	59
39	61
40	63
41	65
42	67
43	69
44	71
45	73
46	75
47	77
48	79
49	82
50	84
51	86
52	88
53	90
54	92
55	94
56	96
57	99
58	101
59	103
60	105
61	107
62	109
63	112
64	114
65	116

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	9
10	10
11	12
12	13
13	15
14	16
15	18
16	19
17	21
18	22
19	24
20	26
21	28
22	29
23	31
24	33
25	35
26	36
27	38
28	40
29	42
30	44
31	46
32	48
33	49
34	51
35	53
36	55
37	57
38	59
39	61
40	63
41	65
42	67
43	69
44	71
45	73
46	75
47	77
48	79
49	82
50	84
51	86
52	88
53	90
54	92
55	94
56	96
57	99
58	101
59	103
60	105
61	107
62	109
63	112
64	114
65	116