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A218740 as a simple table

na(n)
00
11
238
31407
452060
51926221
671270178
72636996587
897568873720
93610048327641
10133571788122718
114942156160540567
12182859777940000980
136765811783780036261
14250335035999861341658
159262396331994869641347
16342708664283810176729840
1712680220578500976539004081

[0,1,38,1407,52060,1926221,71270178,2636996587,
 97568873720,3610048327641,133571788122718,
 4942156160540567,182859777940000980,
 6765811783780036261,250335035999861341658,
 9262396331994869641347,342708664283810176729840,
 12680220578500976539004081]