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A304521 as a simple table

na(n)
11
22
33
44
58
69
717
826
947
1081
11142
12264
13474
14883
151629
163045
175735
1810780
1920429
2038688
2173654
22140426
23268341
24513867
25986034
261894410
273646135
287027826
2913562626
3026208249
3150698866
3298184468
33190338062
34369326691
35717271794
361394198587
372712112562

[1,2,3,4,8,9,17,26,47,81,142,264,474,883,1629,
 3045,5735,10780,20429,38688,73654,140426,268341,
 513867,986034,1894410,3646135,7027826,13562626,
 26208249,50698866,98184468,190338062,369326691,
 717271794,1394198587,2712112562]