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A047051 as a simple table

na(n)
11
22
34
410
529
698
7372
81538
96755
1030996
11146982
12715120
133552254
1417951322
1592045058
16477882876
172508122859
1813289437362
1971010166670
20382291606570
212072025828101
2211298920776704
2361954857579594
24341427364138880

[1,2,4,10,29,98,372,1538,6755,30996,146982,715120,
 3552254,17951322,92045058,477882876,2508122859,
 13289437362,71010166670,382291606570,
 2072025828101,11298920776704,61954857579594,
 341427364138880]