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A013391 as a simple table

na(n)
00
13
223
3721
425199
51716121
6141920855
720103619537
84016386229855
91241116799607721
10494609567396520071
11244232906612554953633
12140315440295583485315151
1392810530303082004433849401

[0,3,23,721,25199,1716121,141920855,20103619537,
 4016386229855,1241116799607721,494609567396520071,
 244232906612554953633,140315440295583485315151,
 92810530303082004433849401]