A165445 - OEIS

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A165445 as a simple table

n	a(n)
0	1
1	27
2	702
3	18252
4	474552
5	12338352
6	320797152
7	8340725952
8	216858874752
9	5638330743201
10	146596599314100
11	3811511581929675
12	99099301124011500
13	2576581829064137700
14	66991127551503386400
15	1741769316230819007600

[1,27,702,18252,474552,12338352,320797152, 8340725952,216858874752,5638330743201, 146596599314100,3811511581929675, 99099301124011500,2576581829064137700, 66991127551503386400,1741769316230819007600]