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A358056 as a simple table

na(n)
01
11
22
34
48
520
648
7216
8576
91392
107200
1143200
12184320
131065600
144314240
1521611520
16150958080
17573834240
182293401600
1932107622400
20236017152000
212798762803200
2222493915136000
23189837914112000
241165284436377600
2513260174468710400
26148874616963072000

[1,1,2,4,8,20,48,216,576,1392,7200,43200,184320,
 1065600,4314240,21611520,150958080,573834240,
 2293401600,32107622400,236017152000,2798762803200,
 22493915136000,189837914112000,1165284436377600,
 13260174468710400,148874616963072000]