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A091616 as a simple table

na(n)
21
30
43
56
610
723
850
999
10200
11404
12805
131599
143166
156225
1612223
1723934
1846713
1990995
20176935
21343395
22665474
231287918
242489467
254806805
269272272
2717870317
2834414163
2966226890
30127365537
31244803475
32470278815
33902997083
341733124564
353325087228
366377076320

[1,0,3,6,10,23,50,99,200,404,805,1599,3166,6225,
 12223,23934,46713,90995,176935,343395,665474,
 1287918,2489467,4806805,9272272,17870317,34414163,
 66226890,127365537,244803475,470278815,902997083,
 1733124564,3325087228,6377076320]