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A130776 as a simple table

na(n)
11
22
33
44
56
67
716
828
931
1038
11127
12256
13278
14469
151298
163477
177298
187525
198191
2013969
2119909
2226738
2331492
2465536
2599381
26131071
27357698
28524287
2920742482
3033550336
31772499089
321959272066

[1,2,3,4,6,7,16,28,31,38,127,256,278,469,1298,
 3477,7298,7525,8191,13969,19909,26738,31492,65536,
 99381,131071,357698,524287,20742482,33550336,
 772499089,1959272066]