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A280979 as a simple table

na(n)
01
11
23
38
43
556
63
7248
83
91016
1051
113968
1263
1316280
143
1565528
1635
17262056
18379
191047972
20613
214192775
221776
2316773447
241488
2567106487
2610696
27268417163
2821164
291073705969
3032933
314294885095
32119104
3317179653599
3452900
3568719346149
36326791
37274877147312

[1,1,3,8,3,56,3,248,3,1016,51,3968,63,16280,3,
 65528,35,262056,379,1047972,613,4192775,1776,
 16773447,1488,67106487,10696,268417163,21164,
 1073705969,32933,4294885095,119104,17179653599,
 52900,68719346149,326791,274877147312]