A183278 - OEIS

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A183278 as a simple table

n	a(n)
1	1
2	3
3	13
4	80
5	693
6	8407
7	142362
8	3357612
9	110120153
10	5016480073
11	317135545779
12	27803984036400
13	3378700619148221
14	568830517952061132
15	132632829107728951932
16	42817890108690930718624

[1,3,13,80,693,8407,142362,3357612,110120153, 5016480073,317135545779,27803984036400, 3378700619148221,568830517952061132, 132632829107728951932,42817890108690930718624]