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A141900 as a simple table

na(n)
01
12
212
324
4240
5480
66720
713440
8241920
9483840
1010644480
1121288960
12553512960
131107025920
142214051840
154428103680
16150555525120
17301111050240
1811442219909120
1922884439818240
2045768879636480

[1,2,12,24,240,480,6720,13440,241920,483840,
 10644480,21288960,553512960,1107025920,2214051840,
 4428103680,150555525120,301111050240,
 11442219909120,22884439818240,45768879636480]