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A193899 as a simple table

na(n)
01
11
22
32
45
510
64
710
821
942
108
1120
1242
1385
14170
1516
1640
1784
18170
19341
20682
2132
2280
23168
24340
25682
261365
272730
2864
29160
30336
31680
321364
332730
345461
3510922
36128
37320
38672
391360
402728
415460
4210922
4321845
4443690
45256
46640
471344
482720
495456
5010920

[1,1,2,2,5,10,4,10,21,42,8,20,42,85,170,16,40,84,
 170,341,682,32,80,168,340,682,1365,2730,64,160,
 336,680,1364,2730,5461,10922,128,320,672,1360,
 2728,5460,10922,21845,43690,256,640,1344,2720,
 5456,10920]