A157089 - OEIS

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A157089 as a simple table

n	a(n)
0	3
1	27
2	363
3	5043
4	70227
5	978123
6	13623483
7	189750627
8	2642885283
9	36810643323
10	512706121227
11	7141075053843
12	99462344632563
13	1385331749802027
14	19295182152595803
15	268747218386539203
16	3743165875258953027

[3,27,363,5043,70227,978123,13623483,189750627, 2642885283,36810643323,512706121227,7141075053843, 99462344632563,1385331749802027,19295182152595803, 268747218386539203,3743165875258953027]