A177513 - OEIS

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A177513 as a simple table

n	a(n)
2	37
3	337
4	3257
5	32233
6	322573
7	3223357
8	32235223
9	322222757
10	3222222257
11	32222232577
12	322222232537
13	3222222223333
14	32222222332733
15	322222222237537
16	3222222222223373
17	32222222222223353
18	322222222222225333

[37,337,3257,32233,322573,3223357,32235223, 322222757,3222222257,32222232577,322222232537, 3222222223333,32222222332733,322222222237537, 3222222222223373,32222222222223353, 322222222222225333]