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A104371 as a simple table

na(n)
11
22
36
412
560
6180
71152
82520
97560
1037332
11415800
121247400
1316118932
14112918900
15564876900
161109481408
1717645365584
1857890359152
191099944846000
205468570553600
2137559092302400
22421791599312500
239256378099515120
2429207007622737652
25146100174169950000
261880759745476519040
275589847741506645552
2839852571442073216768

[1,2,6,12,60,180,1152,2520,7560,37332,415800,
 1247400,16118932,112918900,564876900,1109481408,
 17645365584,57890359152,1099944846000,
 5468570553600,37559092302400,421791599312500,
 9256378099515120,29207007622737652,
 146100174169950000,1880759745476519040,
 5589847741506645552,39852571442073216768]