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A098270 as a simple table

na(n)
01
110
2148
32440
442256
5752800
613660480
7251113600
84660568320
987140108800
101638884021248
1130970912737280
12587599919386624
1311185644310405120
14213540626285805568
154086692369433395200
1678378887309200261120

[1,10,148,2440,42256,752800,13660480,251113600,
 4660568320,87140108800,1638884021248,
 30970912737280,587599919386624,11185644310405120,
 213540626285805568,4086692369433395200,
 78378887309200261120]