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A208655 as a simple table

na(n)
11
21
36
436
52400
690000
755566000
813553164800
972267023646720
10117595223746560000
115219033393851200000000
1257636380373471744768000000
1320810790197418148654769602560000
141578992018570629416640340512656998400

[1,1,6,36,2400,90000,55566000,13553164800,
 72267023646720,117595223746560000,
 5219033393851200000000,57636380373471744768000000,
 20810790197418148654769602560000,
 1578992018570629416640340512656998400]