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A347854 as a simple table

na(n)
01
140
24620
3622336
489237148
513236695040
62005604901300
7308350245273600
847913489552349980
97505566011722039296
101183237138556438547120
11187495217080545878999040
1229836408028165719837829700
134764790302634058161217077248

[1,40,4620,622336,89237148,13236695040,
 2005604901300,308350245273600,47913489552349980,
 7505566011722039296,1183237138556438547120,
 187495217080545878999040,
 29836408028165719837829700,
 4764790302634058161217077248]