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A249892 as a simple table

na(n)
01
11
22
35
415
552
6207
7923
84532
924271
10140581
11874434
125806557
1340955973
14305544958
152402139329
1619837601155
17171598571288
181550865447043
1914611295961047
20143210242799872
211457573997373131
2215379106145570681
23167962044452359398
241896100883094424657
2522096376018936592193

[1,1,2,5,15,52,207,923,4532,24271,140581,874434,
 5806557,40955973,305544958,2402139329,19837601155,
 171598571288,1550865447043,14611295961047,
 143210242799872,1457573997373131,
 15379106145570681,167962044452359398,
 1896100883094424657,22096376018936592193]