A372034 - cp's OEIS frontend

A372034 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 nonincreasing order.

n	a(n)
1	4
2	8
3	9
4	22
5	32
6	33
7	44
8	55
9	64
10	77
11	88
12	93
13	99
14	422
15	633
16	775
17	844
18	933
19	993
20	4222
21	4442
22	6333
23	6655
24	6663
25	7533
26	7744
27	7775
28	8444
29	8884
30	9663
31	9993
32	44222
33	66333
34	88444
35	99633
36	99933
37	99993
38	933333
39	966333
40	996663
41	999993
42	4442222
43	6663333
44	7777775
45	8884444
46	9663333
47	9666633
48	9666663

[4, 8, 9, 22, 32, 33, 44, 55, 64, 77, 88, 93, 99, 422, 633, 775, 844, 933, 993, 4222, 4442, 6333, 6655, 6663, 7533, 7744, 7775, 8444, 8884, 9663, 9993, 44222, 66333, 88444, 99633, 99933, 99993, 933333, 966333, 996663, 999993, 4442222, 6663333, 7777775, 8884444, 9663333, 9666633, 9666663]

cp's OEIS Frontend

A372034 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 nonincreasing order.

Table of values

List of values