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A126154 as a simple table

na(n)
01
110
2420
338760
46274320
51574566560
6566087814720
7276000683679360
8175277074975269120
9140576092830146972160
10138951226585459200107520
11165951785120565606919464960
12235593066998837613695124049920

[1,10,420,38760,6274320,1574566560,566087814720,
 276000683679360,175277074975269120,
 140576092830146972160,138951226585459200107520,
 165951785120565606919464960,
 235593066998837613695124049920]