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A168083 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
100
110
121
131
142
154
168
1716
1832
1964
20128
21256
22512
231024
242048
254095
268189
2716376
2832748
2965488
30130960
31261888
32523712
331047296
342094336
354188160
368375296
3716748544
3833492993
3966977797
40133939218
41267845688
42535625888
431071120816

[0,0,0,0,0,0,0,0,0,0,0,1,1,2,4,8,16,32,64,128,256,
 512,1024,2048,4095,8189,16376,32748,65488,130960,
 261888,523712,1047296,2094336,4188160,8375296,
 16748544,33492993,66977797,133939218,267845688,
 535625888,1071120816]