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A127115 as a simple table

na(n)
01
11
22
36
430
5170
61320
711660
8116600
91304600
1015657400
11230212400
123443176000
1356312146000
141211416624000
1523016735654000
16460356735300000
1712067735663300000
18265756631234600000
196601271140642200000

[1,1,2,6,30,170,1320,11660,116600,1304600,
 15657400,230212400,3443176000,56312146000,
 1211416624000,23016735654000,460356735300000,
 12067735663300000,265756631234600000,
 6601271140642200000]