A372295 - cp's OEIS frontend

A372295 Composite numbers k such that k's prime factors are distinct, the digits of k are in nonincreasing order while the digits of the concatenation of k's ascending order prime factors are in nondecreasing order.

n	a(n)
1	6
2	10
3	21
4	30
5	42
6	70
7	74
8	94
9	111
10	210
11	222
12	553
13	554
14	611
15	851
16	871
17	885
18	998
19	5530
20	5554
21	7751
22	8441
23	8655
24	9998
25	85511
26	95554
27	99998
28	9999998
29	77744411
30	5555555554
31	7777752221
32	8666666655
33	755555555554
34	95555555555554
35	999999999999998
36	5555555555555554
37	8666666666666655
38	755555555555555554

[6, 10, 21, 30, 42, 70, 74, 94, 111, 210, 222, 553, 554, 611, 851, 871, 885, 998, 5530, 5554, 7751, 8441, 8655, 9998, 85511, 95554, 99998, 9999998, 77744411, 5555555554, 7777752221, 8666666655, 755555555554, 95555555555554, 999999999999998, 5555555555555554, 8666666666666655, 755555555555555554]

cp's OEIS Frontend

A372295 Composite numbers k such that k's prime factors are distinct, the digits of k are in nonincreasing order while the digits of the concatenation of k's ascending order prime factors are in nondecreasing order.

Table of values

List of values