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A133308 as a simple table

na(n)
01
18
2120
32248
447160
51059976
624958200
7607693640
815175702200
9386555020552
1010004252294520
11262321706465736
126953918939056440
13186059575955360136
145018045415643478520
15136276936332343342152
163723442515218861494200
17102281105054908404972040

[1,8,120,2248,47160,1059976,24958200,607693640,
 15175702200,386555020552,10004252294520,
 262321706465736,6953918939056440,
 186059575955360136,5018045415643478520,
 136276936332343342152,3723442515218861494200,
 102281105054908404972040]