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A275207 as a simple table

na(n)
01
11
23
36
416
538
6100
7256
8681
91805
104867
1113162
1235925
1398469
14271511
15751656
162089963
175831451
1816326785
1945847770
20129108926
21364498596
221031486590
232925337352
248313215743
2523668977163
2667507773621
27192859753310
28551821400008
291581188102590

[1,1,3,6,16,38,100,256,681,1805,4867,13162,35925,
 98469,271511,751656,2089963,5831451,16326785,
 45847770,129108926,364498596,1031486590,
 2925337352,8313215743,23668977163,67507773621,
 192859753310,551821400008,1581188102590]