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A153943 as a simple table

na(n)
01
12
22
33
44
58
614
749
879
9253
10741
112335
126399
1337905
14102246
15593203
162884877
1716569870
1880670284
19832584915
203998999249
2140528587997
22352270529241
233516190442125
2429997079375598
25543310308646601
264559849026688799

[1,2,2,3,4,8,14,49,79,253,741,2335,6399,37905,
 102246,593203,2884877,16569870,80670284,832584915,
 3998999249,40528587997,352270529241,3516190442125,
 29997079375598,543310308646601,4559849026688799]