A372029 - cp's OEIS frontend

A372029 For a positive number k, let L(k) denote the list consisting of k followed by the prime factors of k, with repetition, in nondecreasing order; sequence gives composite k such that the digits of L(k) are in nondecreasing order.

n	a(n)
1	12
2	25
3	35
4	111
5	112
6	125
7	222
8	245
9	333
10	335
11	445
12	1225
13	2225
14	11125
15	33445
16	334445
17	3333335
18	3334445
19	3444445
20	33333445
21	333333335
22	334444445
23	3333333335
24	33333334445
25	333333333335
26	33333333334445
27	33333333444445
28	444444444444445
29	2222222222222225
30	11111111111111125

[12, 25, 35, 111, 112, 125, 222, 245, 333, 335, 445, 1225, 2225, 11125, 33445, 334445, 3333335, 3334445, 3444445, 33333445, 333333335, 334444445, 3333333335, 33333334445, 333333333335, 33333333334445, 33333333444445, 444444444444445, 2222222222222225, 11111111111111125]

cp's OEIS Frontend

A372029 For a positive number k, let L(k) denote the list consisting of k followed by the prime factors of k, with repetition, in nondecreasing order; sequence gives composite k such that the digits of L(k) are in nondecreasing order.

Table of values

List of values