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A026557 as a simple table

na(n)
41
53
612
728
893
9201
10631
111316
124037
138259
1425052
1550680
16152782
17306958
18921982
191844304
205526849
2111024331
2232987492
2365675764
24196323853
25390374193
261166171943
272316881892
286918228187
2913737041045
3041007165500

[1,3,12,28,93,201,631,1316,4037,8259,25052,50680,
 152782,306958,921982,1844304,5526849,11024331,
 32987492,65675764,196323853,390374193,1166171943,
 2316881892,6918228187,13737041045,41007165500]