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A138549 as a simple table

na(n)
01
11
22
35
416
562
6282
71459
88375
952323
10350676
112493846
1218659787
13145918295
141186129168
159978055080
1686545684565
17771571356565
187051538798490
1965913863945775
20628919704903746
216114899366942556
2260492393411513722

[1,1,2,5,16,62,282,1459,8375,52323,350676,2493846,
 18659787,145918295,1186129168,9978055080,
 86545684565,771571356565,7051538798490,
 65913863945775,628919704903746,6114899366942556,
 60492393411513722]