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A109262 as a simple table

na(n)
00
11
22
36
419
563
6215
7749
82650
99490
1034318
11125104
12459152
131694914
146287896
1523429158
1687635243
17328917615
181238303243
194674847097
2017692789741
2167114622451
22255120892105
23971649360211
243707176155659
2514167390221873

[0,1,2,6,19,63,215,749,2650,9490,34318,125104,
 459152,1694914,6287896,23429158,87635243,
 328917615,1238303243,4674847097,17692789741,
 67114622451,255120892105,971649360211,
 3707176155659,14167390221873]