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A080648 as a simple table

na(n)
10
20
32
43
55
62
713
810
919
1016
1189
125
13233
1442
1568
1657
171597
1838
19150
2060
21436
22288
2328657
2435
253006
26754
27181
28326
29514229
30110
312974
322264
3319892
345168
35141979
36148
372443
389499
39135956
402228
4162158
42676
43433494437
44641
45109526
4629257
472971215073
481185

[0,0,2,3,5,2,13,10,19,16,89,5,233,42,68,57,1597,
 38,150,60,436,288,28657,35,3006,754,181,326,
 514229,110,2974,2264,19892,5168,141979,148,2443,
 9499,135956,2228,62158,676,433494437,641,109526,
 29257,2971215073,1185]