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A026848 as a simple table

na(n)
41
511
679
7471
82535
912809
1062067
11292085
121345718
136102780
1427343148
15121359692
16534632836
172341151646
1810201950700
1944278673806
20191540714294
21826265471868
223555992623850
2315273547250820
2465491352071266
25280412963707416

[1,11,79,471,2535,12809,62067,292085,1345718,
 6102780,27343148,121359692,534632836,2341151646,
 10201950700,44278673806,191540714294,826265471868,
 3555992623850,15273547250820,65491352071266,
 280412963707416]