A099656 - OEIS

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A099656 as a simple table

n	a(n)
0	2
1	3
2	23
3	223
4	2237
5	22229
6	222247
7	2222239
8	22222223
9	222222227
10	2222222243
11	22222222223
12	222222222301
13	2222222222243
14	22222222222229
15	222222222222227
16	2222222222222281
17	22222222222222301
18	222222222222222281

[2,3,23,223,2237,22229,222247,2222239,22222223, 222222227,2222222243,22222222223,222222222301, 2222222222243,22222222222229,222222222222227, 2222222222222281,22222222222222301, 222222222222222281]