A244397 - cp's OEIS frontend

A244397 Consider a number n with m decimal digits, m>1. The sequence lists the numbers n such that the prefix of length m-1 and the suffix of length m-1 have both the same distinct prime divisors.

n	a(n)
1	22
2	24
3	28
4	33
5	39
6	42
7	44
8	48
9	55
10	66
11	77
12	82
13	84
14	88
15	93
16	99
17	111
18	124
19	164
20	222
21	248
22	333
23	444
24	526
25	548
26	555
27	666
28	724
29	777
30	842
31	888
32	999
33	1111
34	1248
35	1664
36	2162
37	2222
38	2500
39	2855
40	3200
41	3333
42	3600
43	3748
44	4324
45	4444
46	4864
47	5042
48	5128
49	5555
50	5768
51	5882

[22, 24, 28, 33, 39, 42, 44, 48, 55, 66, 77, 82, 84, 88, 93, 99, 111, 124, 164, 222, 248, 333, 444, 526, 548, 555, 666, 724, 777, 842, 888, 999, 1111, 1248, 1664, 2162, 2222, 2500, 2855, 3200, 3333, 3600, 3748, 4324, 4444, 4864, 5042, 5128, 5555, 5768, 5882]

cp's OEIS Frontend

A244397 Consider a number n with m decimal digits, m>1. The sequence lists the numbers n such that the prefix of length m-1 and the suffix of length m-1 have both the same distinct prime divisors.

Table of values

List of values