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A077551 as a simple table

na(n)
00
11
23
35
416
531
6105
7218
8770
91673
106096
1113672
1251027
13117194
14445787
151042970
164028922
179567393
1837432324
1989984282
20355854272

[0,1,3,5,16,31,105,218,770,1673,6096,13672,51027,
 117194,445787,1042970,4028922,9567393,37432324,
 89984282,355854272]