A342999 - cp's OEIS frontend

A342999 a(n) is always followed by the concatenation of a(n)'s distinct prime factors in increasing order. If this concatenation is already in the sequence, a(n+1) is the smallest term not yet present.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	23
8	7
9	8
10	9
11	10
12	25
13	11
14	12
15	13
16	14
17	27
18	15
19	35
20	57
21	319
22	1129
23	16
24	17
25	18
26	19
27	20
28	21
29	37
30	22
31	211
32	24
33	26
34	213
35	371
36	753
37	3251
38	28
39	29
40	30
41	235
42	547
43	31
44	32
45	33
46	311
47	34
48	217
49	731
50	1743
51	3783
52	31397
53	36
54	38
55	219
56	373
57	39
58	313
59	40
60	41
61	42
62	237
63	379
64	43
65	44
66	45
67	46
68	223
69	47

[1, 2, 3, 4, 5, 6, 23, 7, 8, 9, 10, 25, 11, 12, 13, 14, 27, 15, 35, 57, 319, 1129, 16, 17, 18, 19, 20, 21, 37, 22, 211, 24, 26, 213, 371, 753, 3251, 28, 29, 30, 235, 547, 31, 32, 33, 311, 34, 217, 731, 1743, 3783, 31397, 36, 38, 219, 373, 39, 313, 40, 41, 42, 237, 379, 43, 44, 45, 46, 223, 47]

cp's OEIS Frontend

A342999 a(n) is always followed by the concatenation of a(n)'s distinct prime factors in increasing order. If this concatenation is already in the sequence, a(n+1) is the smallest term not yet present.

Table of values

List of values