A025681 - cp's OEIS frontend

A025681 Exponent of 9 (value of j) in n-th number of form 7^i*9^j.

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	3
11	0
12	1
13	2
14	3
15	4
16	0
17	1
18	2
19	3
20	4
21	5
22	0
23	1
24	2
25	3
26	4
27	5
28	6
29	0
30	1
31	2
32	3
33	4
34	5
35	6
36	7
37	0
38	1
39	2
40	3
41	4
42	5
43	6
44	7
45	0
46	8
47	1
48	2
49	3
50	4
51	5
52	6
53	7
54	0
55	8
56	1
57	9
58	2
59	3
60	4
61	5
62	6
63	7
64	0
65	8
66	1
67	9
68	2
69	10
70	3
71	4
72	5
73	6
74	7
75	0
76	8
77	1
78	9
79	2
80	10
81	3
82	11
83	4
84	5
85	6
86	7
87	0
88	8
89	1
90	9
91	2
92	10
93	3
94	11
95	4
96	12
97	5
98	6
99	7
100	0
101	8
102	1
103	9
104	2

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

cp's OEIS Frontend

A025681 Exponent of 9 (value of j) in n-th number of form 7^i*9^j.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	3
11	0
12	1
13	2
14	3
15	4
16	0
17	1
18	2
19	3
20	4
21	5
22	0
23	1
24	2
25	3
26	4
27	5
28	6
29	0
30	1
31	2
32	3
33	4
34	5
35	6
36	7
37	0
38	1
39	2
40	3
41	4
42	5
43	6
44	7
45	0
46	8
47	1
48	2
49	3
50	4
51	5
52	6
53	7
54	0
55	8
56	1
57	9
58	2
59	3
60	4
61	5
62	6
63	7
64	0
65	8
66	1
67	9
68	2
69	10
70	3
71	4
72	5
73	6
74	7
75	0
76	8
77	1
78	9
79	2
80	10
81	3
82	11
83	4
84	5
85	6
86	7
87	0
88	8
89	1
90	9
91	2
92	10
93	3
94	11
95	4
96	12
97	5
98	6
99	7
100	0
101	8
102	1
103	9
104	2

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	3
11	0
12	1
13	2
14	3
15	4
16	0
17	1
18	2
19	3
20	4
21	5
22	0
23	1
24	2
25	3
26	4
27	5
28	6
29	0
30	1
31	2
32	3
33	4
34	5
35	6
36	7
37	0
38	1
39	2
40	3
41	4
42	5
43	6
44	7
45	0
46	8
47	1
48	2
49	3
50	4
51	5
52	6
53	7
54	0
55	8
56	1
57	9
58	2
59	3
60	4
61	5
62	6
63	7
64	0
65	8
66	1
67	9
68	2
69	10
70	3
71	4
72	5
73	6
74	7
75	0
76	8
77	1
78	9
79	2
80	10
81	3
82	11
83	4
84	5
85	6
86	7
87	0
88	8
89	1
90	9
91	2
92	10
93	3
94	11
95	4
96	12
97	5
98	6
99	7
100	0
101	8
102	1
103	9
104	2

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	3
11	0
12	1
13	2
14	3
15	4
16	0
17	1
18	2
19	3
20	4
21	5
22	0
23	1
24	2
25	3
26	4
27	5
28	6
29	0
30	1
31	2
32	3
33	4
34	5
35	6
36	7
37	0
38	1
39	2
40	3
41	4
42	5
43	6
44	7
45	0
46	8
47	1
48	2
49	3
50	4
51	5
52	6
53	7
54	0
55	8
56	1
57	9
58	2
59	3
60	4
61	5
62	6
63	7
64	0
65	8
66	1
67	9
68	2
69	10
70	3
71	4
72	5
73	6
74	7
75	0
76	8
77	1
78	9
79	2
80	10
81	3
82	11
83	4
84	5
85	6
86	7
87	0
88	8
89	1
90	9
91	2
92	10
93	3
94	11
95	4
96	12
97	5
98	6
99	7
100	0
101	8
102	1
103	9
104	2