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A285894 as a simple table

na(n)
01
12
24
38
416
532
664
7128
8256
9472
10856
111494
122494
134060
146460
1510002
1615170
1722492
1832596
1946824
2066076
2191716
22125784
23170582
24227426
25302210
26396144
27514540
28663740
29850580
301078628
311362312

[1,2,4,8,16,32,64,128,256,472,856,1494,2494,4060,
 6460,10002,15170,22492,32596,46824,66076,91716,
 125784,170582,227426,302210,396144,514540,663740,
 850580,1078628,1362312]