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A203573 as a simple table

na(n)
04
113
245
3152
4491
51531
64652
713865
840713
9118144
10339559
11968183
122742100
137721797
1421637221
1560367976
16167787107
17464776435
181283571068
193535240289
209713031489
2126627195728
2272847698655
23198929987567
24542305383076
251476061431421

[4,13,45,152,491,1531,4652,13865,40713,118144,
 339559,968183,2742100,7721797,21637221,60367976,
 167787107,464776435,1283571068,3535240289,
 9713031489,26627195728,72847698655,198929987567,
 542305383076,1476061431421]