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A289887 as a simple table

na(n)
01
12
26
313
429
559
6123
7245
8501
91003
102027
114053
128149
1316298
1432682
1565365
16130901
17261802
18523946
191047893
202096469
214192938
228387242
2316774477
2433551693
2567103410
26134212274
27268424461
28536859917
291073720050
302147461874
314294923277
328589890573

[1,2,6,13,29,59,123,245,501,1003,2027,4053,8149,
 16298,32682,65365,130901,261802,523946,1047893,
 2096469,4192938,8387242,16774477,33551693,
 67103410,134212274,268424461,536859917,1073720050,
 2147461874,4294923277,8589890573]