A216166 - cp's OEIS frontend

A216166 Composite numbers and 1 which yield a prime whenever a 3 is inserted anywhere in them (including at the beginning or end).

n	a(n)
1	1
2	121
3	343
4	361
5	533
6	637
7	793
8	889
9	943
10	1183
11	3013
12	3223
13	3353
14	3403
15	3757
16	3827
17	3893
18	4313
19	4543
20	4963
21	8653
22	10423
23	14257
24	20339
25	23083
26	23419
27	30917
28	33031
29	33101
30	33323
31	33433
32	33701
33	33821
34	34333
35	34393
36	35453
37	36437
38	36533
39	39137
40	39247
41	42869
42	43337

[1, 121, 343, 361, 533, 637, 793, 889, 943, 1183, 3013, 3223, 3353, 3403, 3757, 3827, 3893, 4313, 4543, 4963, 8653, 10423, 14257, 20339, 23083, 23419, 30917, 33031, 33101, 33323, 33433, 33701, 33821, 34333, 34393, 35453, 36437, 36533, 39137, 39247, 42869, 43337]

cp's OEIS Frontend

A216166 Composite numbers and 1 which yield a prime whenever a 3 is inserted anywhere in them (including at the beginning or end).

Table of values

List of values