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A026522 as a simple table

na(n)
21
32
45
513
627
776
8150
9434
10845
112470
124797
1314085
1427377
1580584
16156900
17462620
18902394
192664276
205205950
2115387670
2230114073
2389097932
24174609162
25517058502
261014555607
273006637946
285906040623
2917514547015
3034438443075

[1,2,5,13,27,76,150,434,845,2470,4797,14085,27377,
 80584,156900,462620,902394,2664276,5205950,
 15387670,30114073,89097932,174609162,517058502,
 1014555607,3006637946,5906040623,17514547015,
 34438443075]