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A248379 as a simple table

na(n)
12
24
38
414
516
632
764
8128
9122
10244
11256
12512
13866
141024
151766
162048
174006
184096
198192
208482
2112242
2216384
2332768
2452586
2565536
26105806
27131072

[2,4,8,14,16,32,64,128,122,244,256,512,866,1024,
 1766,2048,4006,4096,8192,8482,12242,16384,32768,
 52586,65536,105806,131072]