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A215252 as a simple table

na(n)
00
11
21
33
412
556
6289
71602
89367
957075
10359346
112323416
1215356446
13103389175
14707107627
154901988047
1634384943850
17243694702311
181742953208739
1912567593026554
2091280392585747
21667341975412356
224907899368783645
2336289929612761691
24269660272111724536
252012845416966620068
2615087243969226496324
27113521159338891300347
28857211201390859034536

[0,1,1,3,12,56,289,1602,9367,57075,359346,2323416,
 15356446,103389175,707107627,4901988047,
 34384943850,243694702311,1742953208739,
 12567593026554,91280392585747,667341975412356,
 4907899368783645,36289929612761691,
 269660272111724536,2012845416966620068,
 15087243969226496324,113521159338891300347,
 857211201390859034536]