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A052974 as a simple table

na(n)
01
10
21
33
45
514
634
781
8200
9487
101187
112899
127072
1317256
1442109
15102748
16250717
17611779
181492805
193642610
208888370
2121688597
2252922564
23129136875
24315108171
25768898587
261876197092
274578127192
2811171133721
2927258794552
3066514455833

[1,0,1,3,5,14,34,81,200,487,1187,2899,7072,17256,
 42109,102748,250717,611779,1492805,3642610,
 8888370,21688597,52922564,129136875,315108171,
 768898587,1876197092,4578127192,11171133721,
 27258794552,66514455833]