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A006958 as a simple table

na(n)
11
22
34
49
520
646
7105
8242
9557
101285
112964
126842
1315793
1436463
1584187
16194388
17448847
181036426
192393208
205526198
2112760671
2229466050
2368041019
24157115917
25362802072
26837759792
271934502740
284467033943
2910314998977
3023818760154
3155000815222
32127004500762

[1,2,4,9,20,46,105,242,557,1285,2964,6842,15793,
 36463,84187,194388,448847,1036426,2393208,5526198,
 12760671,29466050,68041019,157115917,362802072,
 837759792,1934502740,4467033943,10314998977,
 23818760154,55000815222,127004500762]