A125589 - OEIS

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A125589 as a simple table

n	a(n)
1	2
2	13
3	103
4	1013
5	10039
6	100103
7	1000193
8	10000931
9	100001903
10	1000003957
11	10000003957
12	100000013957
13	1000000030957
14	10000000301957
15	100000000730957
16	1000000000730957
17	10000000003632979
18	100000000007309357

[2,13,103,1013,10039,100103,1000193,10000931, 100001903,1000003957,10000003957,100000013957, 1000000030957,10000000301957,100000000730957, 1000000000730957,10000000003632979, 100000000007309357]