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A068044 as a simple table

na(n)
01
11
21
31
41
51
61
71
83
914
1037
1171
12129
13253
14511
151024
162048
174096
188192
1916384
2032768
2165536
22131072
23262144
24524288
251048576
262097152
274194304
288388608
2916777216
3033554432
3167108864
32134217728
33268435456
34536870912
351073741824

[1,1,1,1,1,1,1,1,3,14,37,71,129,253,511,1024,2048,
 4096,8192,16384,32768,65536,131072,262144,524288,
 1048576,2097152,4194304,8388608,16777216,33554432,
 67108864,134217728,268435456,536870912,1073741824]