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A010920 as a simple table

na(n)
03
113
256
3241
41037
54462
619199
782609
8355448
91529413
106580721
1128315366
12121834667
13524227237
142255632184
159705479209
1641760499493
17179686059838
18773148800711
193326685824041
2014313982718072

[3,13,56,241,1037,4462,19199,82609,355448,1529413,
 6580721,28315366,121834667,524227237,2255632184,
 9705479209,41760499493,179686059838,773148800711,
 3326685824041,14313982718072]