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A206464 as a simple table

na(n)
01
11
22
34
410
526
674
7218
8672
92126
106908
1122876
1277100
13263514
14911992
153189762
1611261448
1740083806
18143713968
19518594034
201882217168
216867064856
2225172021144
2392666294090
24342467464612
251270183943200
264726473541216
2717640820790092
2866025467919972

[1,1,2,4,10,26,74,218,672,2126,6908,22876,77100,
 263514,911992,3189762,11261448,40083806,143713968,
 518594034,1882217168,6867064856,25172021144,
 92666294090,342467464612,1270183943200,
 4726473541216,17640820790092,66025467919972]