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A135292 as a simple table

na(n)
01
120
26400
332768000
42684354560000
53518437208883200000
673786976294838206464000000
724758800785707605497982484480000000
8132922799578491587290380706028034457600000000

[1,20,6400,32768000,2684354560000,
 3518437208883200000,73786976294838206464000000,
 24758800785707605497982484480000000,
 132922799578491587290380706028034457600000000]