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A287973 as a simple table

na(n)
01
11
22
35
414
542
6132
7429
81430
94862
1016795
1158784
12207987
13742760
142673592
159690220
1635333404
17129522165
18477035494
191764359882
206550391672
2124402303601
2291188289504
23341720434791
241283867554724
254834962472637
2618247627360326
2769005857450243

[1,1,2,5,14,42,132,429,1430,4862,16795,58784,
 207987,742760,2673592,9690220,35333404,129522165,
 477035494,1764359882,6550391672,24402303601,
 91188289504,341720434791,1283867554724,
 4834962472637,18247627360326,69005857450243]