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A287280 as a simple table

na(n)
01
11
22
35
415
552
6203
7877
84140
921147
10111835
11607726
123372147
1319006265
14108345829
15622553137
163596571484
1720854506433
18121247283115
19706276123051
204119684344466
2124052768332415
22140525287140277
23821384370939660
244802655803213444
2528087804863005024

[1,1,2,5,15,52,203,877,4140,21147,111835,607726,
 3372147,19006265,108345829,622553137,3596571484,
 20854506433,121247283115,706276123051,
 4119684344466,24052768332415,140525287140277,
 821384370939660,4802655803213444,
 28087804863005024]