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A088695 as a simple table

na(n)
01
11
25
340
4485
57776
6156457
73788800
8107414505
93491200000
10128019454541
115229222395904
12235490648957005
1311592449531084800
14619331166211640625
1535691050995648823296
162206955604752999720273
17145757527499874820423680
1810240455593560436925898645

[1,1,5,40,485,7776,156457,3788800,107414505,
 3491200000,128019454541,5229222395904,
 235490648957005,11592449531084800,
 619331166211640625,35691050995648823296,
 2206955604752999720273,145757527499874820423680,
 10240455593560436925898645]