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A075510 as a simple table

na(n)
01
130
2560
38400
4111216
51360800
615790720
7176563200
81922176256
920518417920
10215825326080
112244998246400
1223153670762496
13237224718704640
142418102840688640
1524549985173504000
16248464183682727936

[1,30,560,8400,111216,1360800,15790720,176563200,
 1922176256,20518417920,215825326080,2244998246400,
 23153670762496,237224718704640,2418102840688640,
 24549985173504000,248464183682727936]