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A249714 as a simple table

na(n)
10
21
33
46
57
612
721
824
948
1096
11192
12384
13768
141536
153072
166144
1712288
1824576
1949152
2098304
21196608
22393216
23786432
241572864
253145728
266291456
2712582912
2825165824
2950331648

[0,1,3,6,7,12,21,24,48,96,192,384,768,1536,3072,
 6144,12288,24576,49152,98304,196608,393216,786432,
 1572864,3145728,6291456,12582912,25165824,
 50331648]