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A081616 as a simple table

na(n)
00
10
20
31
49
569
6510
73740
827454
9202321
101498074
1111145324
1283291428
13625022772
144707757080
1535579447280
16269718129308
172050317850201
1815625047614946
19119347362039788
20913501931766460
217005437509949364
2253817428069374328
23414107216180618608

[0,0,0,1,9,69,510,3740,27454,202321,1498074,
 11145324,83291428,625022772,4707757080,
 35579447280,269718129308,2050317850201,
 15625047614946,119347362039788,913501931766460,
 7005437509949364,53817428069374328,
 414107216180618608]