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A297565 as a simple table

na(n)
21
33
48
5144
647520
716656192
83321907200
921173194506240
107866775374741504000
111714731229742768455680000
12149617202324844553489612800000
131023015704130692419403265343488000000
14822671651496871196689402715812984258560000000
15267398413297417500827783894166564037306456473600000000

[1,3,8,144,47520,16656192,3321907200,
 21173194506240,7866775374741504000,
 1714731229742768455680000,
 149617202324844553489612800000,
 1023015704130692419403265343488000000,
 822671651496871196689402715812984258560000000,
 26739841329741750082778389416656403730645647360000\
 0000]