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A121654 as a simple table

na(n)
01
11
24
313
441
5150
6568
72115
87974
930307
10115063
11436831
121659809
136306619
1424210855
1593152526
16357925365
171384070472
185365825156
1920791117843
2080784911668
21314369613909
221223297887923
234773716056341
2418647712778338

[1,1,4,13,41,150,568,2115,7974,30307,115063,
 436831,1659809,6306619,24210855,93152526,
 357925365,1384070472,5365825156,20791117843,
 80784911668,314369613909,1223297887923,
 4773716056341,18647712778338]