A379003 - cp's OEIS frontend

A379003 Ordinal transform of A132741, where A132741 is the largest divisor of n having the form 2^i*5^j. a(0) = 0 by convention.

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

[0, 1, 1, 2, 1, 1, 2, 3, 1, 4, 1, 5, 2, 6, 3, 2, 1, 7, 4, 8, 1, 9, 5, 10, 2, 1, 6, 11, 3, 12, 2, 13, 1, 14, 7, 3, 4, 15, 8, 16, 1, 17, 9, 18, 5, 4, 10, 19, 2, 20, 1, 21, 6, 22, 11, 5, 3, 23, 12, 24, 2, 25, 13, 26, 1, 6, 14, 27, 7, 28, 3, 29, 4, 30, 15, 2, 8, 31, 16, 32, 1, 33, 17, 34, 9, 7, 18, 35, 5, 36, 4, 37, 10]

cp's OEIS Frontend

A379003 Ordinal transform of A132741, where A132741 is the largest divisor of n having the form 2^i*5^j. a(0) = 0 by convention.

Table of values

List of values

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

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

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