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A131683 as a simple table

na(n)
048
1175
21680
325410
4294000
52295513
612991440
757550100
8211281840
9669529875
101885734928
114823347830
1211387316720
1325126129245
1452326450000
15103659864168
16196585724720
17358766207415
18632810010000
191082730294250
201802581066608
212927824829985
224650083620560

[48,175,1680,25410,294000,2295513,12991440,
 57550100,211281840,669529875,1885734928,
 4823347830,11387316720,25126129245,52326450000,
 103659864168,196585724720,358766207415,
 632810010000,1082730294250,1802581066608,
 2927824829985,4650083620560]