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A064767 as a simple table

na(n)
11
2168
311232
486016
51488000
61886976
733784128
844040192
9221079456
10249984000
112124276000
12966131712
139726417792
145675733504
1516713216000
1622548578304
17111203278848
1837141348608
19304812862560
20127991808000

[1,168,11232,86016,1488000,1886976,33784128,
 44040192,221079456,249984000,2124276000,966131712,
 9726417792,5675733504,16713216000,22548578304,
 111203278848,37141348608,304812862560,
 127991808000]