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A291683 as a simple table

na(n)
00
10
21
33
49
525
671
7205
8607
91833
105635
1117577
1255515
13177191
14570699
151852571
166055079
1719910729
1865823751
19218654099
20729459551
212443051213
228210993363
2327685671843
2493625082139
25317470233149
261079183930827
273676951654519
2812554734605495
2942952566314235

[0,0,1,3,9,25,71,205,607,1833,5635,17577,55515,
 177191,570699,1852571,6055079,19910729,65823751,
 218654099,729459551,2443051213,8210993363,
 27685671843,93625082139,317470233149,
 1079183930827,3676951654519,12554734605495,
 42952566314235]