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A367336 as a simple table

na(n)
01
11
22
36
412
530
690
7420
82240
913440
1084000
11577500
124331250
1336036000
14322882560
153099672576
1631513337856
17340409701632
183893435962416
1947122428697344
20600341948743680
218030803773358080
22112453396587417600
231646232972560748000
2425147419121286426250

[1,1,2,6,12,30,90,420,2240,13440,84000,577500,
 4331250,36036000,322882560,3099672576,31513337856,
 340409701632,3893435962416,47122428697344,
 600341948743680,8030803773358080,
 112453396587417600,1646232972560748000,
 25147419121286426250]