A288738 - cp's OEIS frontend

A288738 Number of ways writing the n-th 7-smooth number as a product of decimal digits of some other number which has no digits equal to 1.

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

[1, 1, 1, 2, 1, 2, 1, 3, 2, 1, 3, 1, 1, 4, 3, 2, 1, 5, 1, 2, 2, 2, 5, 1, 6, 3, 2, 2, 7, 1, 1, 4, 3, 3, 2, 7, 1, 9, 1, 4, 3, 3, 3, 9, 1, 2, 1, 7, 4, 5, 1, 3, 8, 2, 2, 13, 1, 2, 5, 5, 5, 1, 6, 2, 12, 2, 3, 2, 12, 5, 2, 7, 3, 1, 1, 6, 10, 4, 3, 17, 2, 3, 2, 7, 10, 7]

cp's OEIS Frontend

A288738 Number of ways writing the n-th 7-smooth number as a product of decimal digits of some other number which has no digits equal to 1.

Table of values

List of values

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

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

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