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A075708 as a simple table

na(n)
11
24
38
424
532
6104
7128
8432
9592
101536
112160
128736
138192
1422528
1538912
16111456
17131072
18473600
19524288
201999872
212466048
225909760
238567136
2438054016
2534713728
2689522176
27155493536
28462274560
29539922240
302015330304
312147483648

[1,4,8,24,32,104,128,432,592,1536,2160,8736,8192,
 22528,38912,111456,131072,473600,524288,1999872,
 2466048,5909760,8567136,38054016,34713728,
 89522176,155493536,462274560,539922240,2015330304,
 2147483648]