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A064484 as a simple table

na(n)
22
32
44
54
68
712
84
932
1036
1148
128
1364
14216
15192
16240
178
18208
19648
201536
211200
221440
2316
24416
253024
266144
2712000
288640
2910080
3016
311280
329072
3337632
3460000
35103680
3670560
3780640
3832
392560
4038880
41150528
42456000
43622080
44987840
45645120
46725760

[2,2,4,4,8,12,4,32,36,48,8,64,216,192,240,8,208,
 648,1536,1200,1440,16,416,3024,6144,12000,8640,
 10080,16,1280,9072,37632,60000,103680,70560,80640,
 32,2560,38880,150528,456000,622080,987840,645120,
 725760]