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A293339 as a simple table

na(n)
00
10
21
32
45
511
623
747
894
9188
10376
11753
121506
133013
146027
1512054
1624109
1748218
1896437
19192874
20385749
21771499
221542998
233085996
246171992
2512343985
2624687971
2749375942
2898751885
29197503771
30395007542
31790015084
321580030168
333160060337
346320120674

[0,0,1,2,5,11,23,47,94,188,376,753,1506,3013,6027,
 12054,24109,48218,96437,192874,385749,771499,
 1542998,3085996,6171992,12343985,24687971,
 49375942,98751885,197503771,395007542,790015084,
 1580030168,3160060337,6320120674]