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A281355 as a simple table

na(n)
11
28
357
4419
53092
622846
7168804
81247298
99216354
1068100151
11503195829
123718142208
1327473561358
14203003686106
151500005624924
1611083625711271
1781897532160125
18605145459495141
194471453748222757
2033039822589391676
21244133102611731231
221803913190804074904
2313329215764452299411

[1,8,57,419,3092,22846,168804,1247298,9216354,
 68100151,503195829,3718142208,27473561358,
 203003686106,1500005624924,11083625711271,
 81897532160125,605145459495141,4471453748222757,
 33039822589391676,244133102611731231,
 1803913190804074904,13329215764452299411]