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A167606 as a simple table

na(n)
01
11
22
34
47
514
625
748
890
9168
10316
11594
121116
132096
143935
157388
1613877
1726061
1848944
1991919
20172623
21324188
22608827
231143390
242147309
254032677
267573426
2714223008
2826711028
2950163722
3094208254
31176924559
32332267039
33624002605
341171886500
352200820905

[1,1,2,4,7,14,25,48,90,168,316,594,1116,2096,3935,
 7388,13877,26061,48944,91919,172623,324188,608827,
 1143390,2147309,4032677,7573426,14223008,26711028,
 50163722,94208254,176924559,332267039,624002605,
 1171886500,2200820905]