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A091136 as a simple table

na(n)
01
12
23
38
45
532
67
7128
825
9512
1011
112048
1213
138192
142187
1532768
1617
17131072
1819
19524288
20121
212097152
2223
238388608
24169
2533554432
261594323
27134217728
2829
29536870912
3031
312147483648
32289
338589934592
34129140163
3534359738368
3637

[1,2,3,8,5,32,7,128,25,512,11,2048,13,8192,2187,
 32768,17,131072,19,524288,121,2097152,23,8388608,
 169,33554432,1594323,134217728,29,536870912,31,
 2147483648,289,8589934592,129140163,34359738368,
 37]