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A290355 as a simple table

na(n)
01
11
26
321
491
5336
61337
75026
819193
971769
10268272
11992676
123659116
1313400426
1448863017
15177299790
16640713627
172305930966
188268556438
1929544196129
20105215495691
21373523546056
221322096328899
234666327388034
2416425341129078
2557667752483279
26201967215942032

[1,1,6,21,91,336,1337,5026,19193,71769,268272,
 992676,3659116,13400426,48863017,177299790,
 640713627,2305930966,8268556438,29544196129,
 105215495691,373523546056,1322096328899,
 4666327388034,16425341129078,57667752483279,
 201967215942032]