login

A287254 as a simple table

na(n)
01
11
22
35
415
552
6202
7857
83933
919373
10101755
11566712
123331349
1320592862
14133439286
15903926271
166385918342
1746950260915
18358560107124
192839638581291
2023285101241537
21197425160416845
221728548417051752
2315610025975013920
24145242705457704688

[1,1,2,5,15,52,202,857,3933,19373,101755,566712,
 3331349,20592862,133439286,903926271,6385918342,
 46950260915,358560107124,2839638581291,
 23285101241537,197425160416845,1728548417051752,
 15610025975013920,145242705457704688]