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A054481 as a simple table

na(n)
21
32
42
56
612
712
812
912
1060
1160
1260
13120
14360
15120
16420
17420
18840
192520
202520
212520
225040
235040
245040
252520
262520
275040
285040
2927720
3027720
3155440
3255440
3355440
3455440
35166320
3655440
37110880
3855440
39360360
40360360

[1,2,2,6,12,12,12,12,60,60,60,120,360,120,420,420,
 840,2520,2520,2520,5040,5040,5040,2520,2520,5040,
 5040,27720,27720,55440,55440,55440,55440,166320,
 55440,110880,55440,360360,360360]