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A237386 as a simple table

na(n)
1434
23240
324340
4183764
51379886
610406596
778612538
8593121116
94469323758
1033698637958
11254212599808
121917348305880
1314457809113682
14109028076862576
15822269791408032
166201236835251186
1746765472722995182
18352677245924001228

[434,3240,24340,183764,1379886,10406596,78612538,
 593121116,4469323758,33698637958,254212599808,
 1917348305880,14457809113682,109028076862576,
 822269791408032,6201236835251186,
 46765472722995182,352677245924001228]