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A054664 as a simple table

na(n)
11
21
35
414
551
6165
7585
82032
97280
1026163
1195325
12349350
131290555
144792905
1517895679
1667106816
17252645135
18954429840
193616814565
2013743869130
2152357696365
22199911109725
23764877654105
242932030657200
2511258999068416

[1,1,5,14,51,165,585,2032,7280,26163,95325,349350,
 1290555,4792905,17895679,67106816,252645135,
 954429840,3616814565,13743869130,52357696365,
 199911109725,764877654105,2932030657200,
 11258999068416]