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A203837 as a simple table

na(n)
00
10
21
31
42
53
67
712
828
951
10117
11221
12498
13964
142138
154212
169219
1718401
1839850
1980333
20172520
21350437
22747658
231527648
243242589
256655572
2614070946
2728983184
2861085625
29126167668
30265275043
31549067801
321152293771
332388951139
345006276579
3510392343314
3621753656201
3745202392073
3894536770344
39196591219072

[0,0,1,1,2,3,7,12,28,51,117,221,498,964,2138,4212,
 9219,18401,39850,80333,172520,350437,747658,
 1527648,3242589,6655572,14070946,28983184,
 61085625,126167668,265275043,549067801,1152293771,
 2388951139,5006276579,10392343314,21753656201,
 45202392073,94536770344,196591219072]