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A115425 as a simple table

na(n)
02
14
26
38
44
58
612
716
812
924
1036
1148
1248
1396
14144
15192
16240
17480
18720
19960
201440
212880
224320
235760
2410080
2520160
2630240
2740320
2880640
29161280
30241920
31322560
32725760
331451520
342177280
352903040
367257600
3714515200
3821772800
3929030400
4079833600

[2,4,6,8,4,8,12,16,12,24,36,48,48,96,144,192,240,
 480,720,960,1440,2880,4320,5760,10080,20160,30240,
 40320,80640,161280,241920,322560,725760,1451520,
 2177280,2903040,7257600,14515200,21772800,
 29030400,79833600]