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A230349 as a simple table

na(n)
01
120
2417
39690
4253776
57465176
6244906200
78891411760
8354610872000
915432114297600
10728406536457600
1137090538241120000
122027740775284224000
13118512161081233920000
147376476698319125196800
15487273386402209523916800
1634055074238462266429440000

[1,20,417,9690,253776,7465176,244906200,
 8891411760,354610872000,15432114297600,
 728406536457600,37090538241120000,
 2027740775284224000,118512161081233920000,
 7376476698319125196800,487273386402209523916800,
 34055074238462266429440000]