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A003680 as a simple table

na(n)
12
26
312
424
548
660
7192
8120
9180
10240
113072
12360
1312288
14960
15720
16840
17196608
181260
19786432
201680
212880
2215360
2312582912
242520
256480
2661440
276300
286720
29805306368
305040
313221225472
327560
3346080
34983040
3525920
3610080
37206158430208
383932160
39184320
4015120

[2,6,12,24,48,60,192,120,180,240,3072,360,12288,
 960,720,840,196608,1260,786432,1680,2880,15360,
 12582912,2520,6480,61440,6300,6720,805306368,5040,
 3221225472,7560,46080,983040,25920,10080,
 206158430208,3932160,184320,15120]