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A228315 as a simple table

na(n)
11
22
32
46
56
612
732
824
948
10152
11320
12160
13240
14760
153640
166144
171920
181920
194560
2021840
21160224
22229376
2343008
2426880
2542560
26152880
271121568
2813063792
2916777216
301835008
31688128
32680960
331630720
348972544
35104510336
362012388736

[1,2,2,6,6,12,32,24,48,152,320,160,240,760,3640,
 6144,1920,1920,4560,21840,160224,229376,43008,
 26880,42560,152880,1121568,13063792,16777216,
 1835008,688128,680960,1630720,8972544,104510336,
 2012388736]