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A068425 as a simple table

na(n)
-11
03
16
212
325
450
5100
6201
7402
8804
91608
103216
116433
1212867
1325735
1451471
15102943
16205887
17411774
18823549
191647099
203294198
216588397
2213176794
2326353589
2452707178
25105414357
26210828714
27421657428
28843314856
291686629713

[1,3,6,12,25,50,100,201,402,804,1608,3216,6433,
 12867,25735,51471,102943,205887,411774,823549,
 1647099,3294198,6588397,13176794,26353589,
 52707178,105414357,210828714,421657428,843314856,
 1686629713]