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A139814 as a simple table

na(n)
00
11
23
37
411
523
647
795
8187
9375
10751
111503
123003
136007
1412015
1524031
1648059
1796119
18192239
19384479
20768955
211537911
223075823
236151647
2412303291
2524606583
2649213167
2798426335
28196852667
29393705335
30787410671
311574821343
323149642683

[0,1,3,7,11,23,47,95,187,375,751,1503,3003,6007,
 12015,24031,48059,96119,192239,384479,768955,
 1537911,3075823,6151647,12303291,24606583,
 49213167,98426335,196852667,393705335,787410671,
 1574821343,3149642683]