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A180283 as a simple table

na(n)
33
412
550
6195
7735
82716
99912
1035850
11128865
12461175
131645215
145855941
1520810153
1673870748
17262029364
18929031504
193293120337
2011672207262
2141373395052
22146674116501
23520093043437
241844704839175
256544970763175
2623229252652125

[3,12,50,195,735,2716,9912,35850,128865,461175,
 1645215,5855941,20810153,73870748,262029364,
 929031504,3293120337,11672207262,41373395052,
 146674116501,520093043437,1844704839175,
 6544970763175,23229252652125]