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A287260 as a simple table

na(n)
01
11
22
35
415
552
6203
7877
84140
921147
10115975
11678570
124213596
1327643409
14190833091
151381223515
1610448641031
1782388624090
18675565642030
195748668560311
2050672729373781
21461933478903121
224348527928700455
2342216300909368230
24422143264687282845

[1,1,2,5,15,52,203,877,4140,21147,115975,678570,
 4213596,27643409,190833091,1381223515,10448641031,
 82388624090,675565642030,5748668560311,
 50672729373781,461933478903121,4348527928700455,
 42216300909368230,422143264687282845]