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A246604 as a simple table

na(n)
01
10
20
32
410
537
6126
7422
81422
94853
1016786
1158775
12208000
13742887
142674426
159694830
1635357654
17129644773
18477638682
191767263171
206564120400
2124466266999
2291482563618
23343059613627
241289904147300
254861946401427
2618367353072126
2769533550915977
28263747951750332
291002242216651339

[1,0,0,2,10,37,126,422,1422,4853,16786,58775,
 208000,742887,2674426,9694830,35357654,129644773,
 477638682,1767263171,6564120400,24466266999,
 91482563618,343059613627,1289904147300,
 4861946401427,18367353072126,69533550915977,
 263747951750332,1002242216651339]