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A290855 as a simple table

na(n)
01
12
24
38
416
532
664
7128
8352
9704
101408
112816
125888
1311776
1423552
1547104
1694208
17192512
18385024
19782336
201564672
213129344
226258688
2312550144
2425116672
2550233344
26100597760
27201261056
28402587648
29805175296
301610350592
313220701184
326442319872
3312884639744

[1,2,4,8,16,32,64,128,352,704,1408,2816,5888,
 11776,23552,47104,94208,192512,385024,782336,
 1564672,3129344,6258688,12550144,25116672,
 50233344,100597760,201261056,402587648,805175296,
 1610350592,3220701184,6442319872,12884639744]