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A368807 as a simple table

na(n)
01
14
26720
319313344512000
420823306760116073109787770880000000
5127561365195629861072526583814017987280486114546255888016998400000000000000

[1,4,6720,19313344512000,
 20823306760116073109787770880000000,
 12756136519562986107252658381401798728048611454625\
 5888016998400000000000000]