A285273 - cp's OEIS frontend

A285273 Number of integers, x, with n+1 digits, that have the property that there exists an integer k, with x <= k < 2*x, such that k/x = 1 + (x-10^n)/(10^n-1), i.e., the same digits appear in the denominator and in the recurring decimal.

n	a(n)
1	2
2	4
3	4
4	8
5	8
6	32
7	8
8	32
9	8
10	32
11	8
12	128
13	16
14	32
15	64
16	128
17	8
18	256
19	4
20	256
21	128
22	128
23	4
24	1024
25	64
26	128
27	32
28	512
29	64
30	8192
31	16
32	4096
33	64
34	128
35	256
36	2048
37	16
38	16
39	64
40	4096
41	32
42	16384
43	32
44	2048
45	512
46	128
47	8
48	8192
49	32
50	2048
51	256
52	1024
53	32
54	4096
55	512
56	8192
57	64
58	512
59	8

[2, 4, 4, 8, 8, 32, 8, 32, 8, 32, 8, 128, 16, 32, 64, 128, 8, 256, 4, 256, 128, 128, 4, 1024, 64, 128, 32, 512, 64, 8192, 16, 4096, 64, 128, 256, 2048, 16, 16, 64, 4096, 32, 16384, 32, 2048, 512, 128, 8, 8192, 32, 2048, 256, 1024, 32, 4096, 512, 8192, 64, 512, 8]

cp's OEIS Frontend

A285273 Number of integers, x, with n+1 digits, that have the property that there exists an integer k, with x <= k < 2*x, such that k/x = 1 + (x-10^n)/(10^n-1), i.e., the same digits appear in the denominator and in the recurring decimal.

Table of values

List of values