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A343581 as a simple table

na(n)
01
10
22
36
436
5240
61200
712600
858800
9846720
103810240
1169854400
12307359360
136849722880
1429682132480
15779155977600
163339239904000
17100919250432000
18428906814336000
1914668613050291200
2061934143990118400
212364758225077248000
229931984545324441600
23418798681661180620800

[1,0,2,6,36,240,1200,12600,58800,846720,3810240,
 69854400,307359360,6849722880,29682132480,
 779155977600,3339239904000,100919250432000,
 428906814336000,14668613050291200,
 61934143990118400,2364758225077248000,
 9931984545324441600,418798681661180620800]