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A052899 as a simple table

na(n)
01
11
25
313
445
5141
6461
71485
84813
915565
1050381
11163021
12527565
131707213
145524685
1517878221
1657855181
17187223245
18605867213
191960627405
206344723661
2120531956941
2266442808525
23215013444813
24695798123725
252251650026701
267286492548301
2723579585203405
2876305140600013

[1,1,5,13,45,141,461,1485,4813,15565,50381,163021,
 527565,1707213,5524685,17878221,57855181,
 187223245,605867213,1960627405,6344723661,
 20531956941,66442808525,215013444813,695798123725,
 2251650026701,7286492548301,23579585203405,
 76305140600013]