A109107 - OEIS

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A109107 as a simple table

n	a(n)
0	2
1	20
2	202
3	2040
4	20602
5	208060
6	2101202
7	21220080
8	214302002
9	2164240100
10	21856703002
11	220731270120
12	2229169404202
13	22512425312140
14	227353422525602
15	2296046650568160
16	23187819928207202
17	234174245932640180

[2,20,202,2040,20602,208060,2101202,21220080, 214302002,2164240100,21856703002,220731270120, 2229169404202,22512425312140,227353422525602, 2296046650568160,23187819928207202, 234174245932640180]