A025648 - cp's OEIS frontend

A025648 Exponent of 4 (value of i) in n-th number of form 4^i*7^j.

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

[0, 1, 0, 2, 1, 0, 3, 2, 1, 4, 0, 3, 2, 5, 1, 4, 0, 3, 6, 2, 5, 1, 4, 7, 0, 3, 6, 2, 5, 8, 1, 4, 7, 0, 3, 6, 9, 2, 5, 8, 1, 4, 7, 0, 10, 3, 6, 9, 2, 5, 8, 1, 11, 4, 7, 0, 10, 3, 6, 9, 2, 12, 5, 8, 1, 11, 4, 7, 0, 10, 3, 13, 6, 9, 2, 12, 5, 8, 1, 11, 4, 14, 7, 0, 10, 3, 13, 6, 9, 2, 12, 5, 15, 8, 1, 11, 4, 14, 7]

cp's OEIS Frontend

A025648 Exponent of 4 (value of i) in n-th number of form 4^i*7^j.

Table of values

List of values

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

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

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