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A002055 as a simple table

na(n)
51
69
756
8300
91485
107007
1132032
12143208
13629850
142735810
1511767536
1650220040
17212952285
18898198875
193771484800
2015775723920
2165770848990
22273420862110
231133802618000
244691140763400
2519371432850770
2679850555673174

[1,9,56,300,1485,7007,32032,143208,629850,2735810,
 11767536,50220040,212952285,898198875,3771484800,
 15775723920,65770848990,273420862110,
 1133802618000,4691140763400,19371432850770,
 79850555673174]