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A060801 as a simple table

na(n)
01
13
214
364
4292
51332
66076
727716
8126428
9576708
102630684
1112000004
1254738652
13249693252
141138988956
155195558276
1623699813468
17108107950788
18493140127004
192249484733444
2010261143413212
2146806747599172
22213511451169436

[1,3,14,64,292,1332,6076,27716,126428,576708,
 2630684,12000004,54738652,249693252,1138988956,
 5195558276,23699813468,108107950788,493140127004,
 2249484733444,10261143413212,46806747599172,
 213511451169436]