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A328286 as a simple table

na(n)
11
22
35
421
5114
6780
76390
861110
9667800
108210160
11112152600
121685237400
1327624920400
14490572482400
159381882510000
16192238348302000
174201639474032000
1897572286427616000
192399151995223984000
2062268748888378032000
211701213856860117600000

[1,2,5,21,114,780,6390,61110,667800,8210160,
 112152600,1685237400,27624920400,490572482400,
 9381882510000,192238348302000,4201639474032000,
 97572286427616000,2399151995223984000,
 62268748888378032000,1701213856860117600000]