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A306266 as a simple table

na(n)
11
22
354
46480
52268000
61837080000
72970558360000
88650265944320000
942040292489395200000
10321608237543873280000000
113696886690566823353600000000
1261486619437507406017075200000000
131433990938521547723130227814400000000

[1,2,54,6480,2268000,1837080000,2970558360000,
 8650265944320000,42040292489395200000,
 321608237543873280000000,
 3696886690566823353600000000,
 61486619437507406017075200000000,
 1433990938521547723130227814400000000]