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A222386 as a simple table

na(n)
12
22
34
48
516
68
716
848
964
1016
1124
12248
13512
14232
1532
1664
171024
183968
193968
201024
2164
22128
233968
2432768
2563488
2632768
274096
28128
29232
3015872
31262144
321048576
331048320
34261376
3516224
36256
37512
3865536
392093824
4016776896
4133546240
4216777216
432097152

[2,2,4,8,16,8,16,48,64,16,24,248,512,232,32,64,
 1024,3968,3968,1024,64,128,3968,32768,63488,32768,
 4096,128,232,15872,262144,1048576,1048320,261376,
 16224,256,512,65536,2093824,16776896,33546240,
 16777216,2097152]