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A236559 as a simple table

na(n)
00
11
22
35
410
520
637
766
8113
9190
10310
11497
12782
131212
141851
152793
164163
176142
188972
1912989
2018646
2126561
2237556
2352743
2473593
25102064
26140736
27193011
28263333
29357521
30483129
31649960
32870677
331161604
341543687
352043780
362696156
373544485
384644241
396065739

[0,1,2,5,10,20,37,66,113,190,310,497,782,1212,
 1851,2793,4163,6142,8972,12989,18646,26561,37556,
 52743,73593,102064,140736,193011,263333,357521,
 483129,649960,870677,1161604,1543687,2043780,
 2696156,3544485,4644241,6065739]