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A309811 as a simple table

na(n)
11
22
36
412
560
6120
7360
82520
95040
1055440
11720720
122162160
134324320
1473513440
15367567200
166983776800
17160626866400
18321253732800
199316358251200
20288807105787200
212021649740510400
2274801040398884800
23224403121196654400
249200527969062830400
25395622702669701707200

[1,2,6,12,60,120,360,2520,5040,55440,720720,
 2162160,4324320,73513440,367567200,6983776800,
 160626866400,321253732800,9316358251200,
 288807105787200,2021649740510400,
 74801040398884800,224403121196654400,
 9200527969062830400,395622702669701707200]