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A028671 as a simple table

na(n)
01
172
2466560
3247608990720
410657130578027315200
537158487365982254056334950400
610494634615565778355427184150449750016000

[1,72,466560,247608990720,10657130578027315200,
 37158487365982254056334950400,
 10494634615565778355427184150449750016000]