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A279312 as a simple table

na(n)
01
12
24
38
412
524
640
780
8128
9256
10416
11832
121344
132688
144352
158704
1614080
1728160
1845568
1991136
20147456
21294912
22477184
23954368
241544192
253088384
264997120
279994240
2816171008
2932342016
3052330496

[1,2,4,8,12,24,40,80,128,256,416,832,1344,2688,
 4352,8704,14080,28160,45568,91136,147456,294912,
 477184,954368,1544192,3088384,4997120,9994240,
 16171008,32342016,52330496]