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A256217 as a simple table

na(n)
11
22
32
44
54
67
78
814
916
1026
1132
1252
1364
14101
15128
16202
17256
18399
19512
20796
211024
221583
232048
243162
254096
266302
278192
2812586
2916384
3025124
3132768
3250186
3365536
34100232
35131072
36200266
37262144
38400115
39524288
40799568
411048576
421597834
432097152
443193438
454194304
466382637
478388608
4812757770
4916777216
5025501370

[1,2,2,4,4,7,8,14,16,26,32,52,64,101,128,202,256,
 399,512,796,1024,1583,2048,3162,4096,6302,8192,
 12586,16384,25124,32768,50186,65536,100232,131072,
 200266,262144,400115,524288,799568,1048576,
 1597834,2097152,3193438,4194304,6382637,8388608,
 12757770,16777216,25501370]