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A185758 as a simple table

na(n)
12
215
3120
41190
514595
6215950
73761310
875550188
91721103648
1043872089118
111237592664451
1238282002057156
131288537309627464
1446886217384094764
151834003542264708444
1676744318019878844916
173420833746251201921980

[2,15,120,1190,14595,215950,3761310,75550188,
 1721103648,43872089118,1237592664451,
 38282002057156,1288537309627464,46886217384094764,
 1834003542264708444,76744318019878844916,
 3420833746251201921980]