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A354781 as a simple table

na(n)
11
23
34
412
53
619
734
864
976
10136
11256
12768
1317
141041
1550
162080
174096
1812288
1968
2016452
21200
2232896
2365536
24196608
25768
26262912
27524800
281048576
291049601
302098176
3118
324194322
332096
348390656
3516777216
3650331648
3712288
3867121152
39134225920
40268435456
41268451844
42536887296
4372
441073741896
4532960
462147516416
474294967296
4812884901888

[1,3,4,12,3,19,34,64,76,136,256,768,17,1041,50,
 2080,4096,12288,68,16452,200,32896,65536,196608,
 768,262912,524800,1048576,1049601,2098176,18,
 4194322,2096,8390656,16777216,50331648,12288,
 67121152,134225920,268435456,268451844,536887296,
 72,1073741896,32960,2147516416,4294967296,
 12884901888]