A037276 - cp's OEIS frontend

A037276 Start with 1; for n>1, replace n with the concatenation of its prime factors in increasing order.

n	a(n)
1	1
2	2
3	3
4	22
5	5
6	23
7	7
8	222
9	33
10	25
11	11
12	223
13	13
14	27
15	35
16	2222
17	17
18	233
19	19
20	225
21	37
22	211
23	23
24	2223
25	55
26	213
27	333
28	227
29	29
30	235
31	31
32	22222
33	311
34	217
35	57
36	2233
37	37
38	219
39	313
40	2225
41	41
42	237
43	43
44	2211
45	335
46	223
47	47
48	22223
49	77
50	255
51	317
52	2213
53	53
54	2333

[1, 2, 3, 22, 5, 23, 7, 222, 33, 25, 11, 223, 13, 27, 35, 2222, 17, 233, 19, 225, 37, 211, 23, 2223, 55, 213, 333, 227, 29, 235, 31, 22222, 311, 217, 57, 2233, 37, 219, 313, 2225, 41, 237, 43, 2211, 335, 223, 47, 22223, 77, 255, 317, 2213, 53, 2333]

cp's OEIS Frontend

A037276 Start with 1; for n>1, replace n with the concatenation of its prime factors in increasing order.

Table of values

List of values