login

A287974 as a simple table

na(n)
01
11
22
35
414
542
6132
7429
81430
94862
1016796
1158785
12208010
13742873
142674282
159693840
1635351966
17129613793
18477477188
191766446640
206560091544
2124446776958
2291389820234
23342624437057
241287886748877
254852692487519
2618325298874477
2769344013520559

[1,1,2,5,14,42,132,429,1430,4862,16796,58785,
 208010,742873,2674282,9693840,35351966,129613793,
 477477188,1766446640,6560091544,24446776958,
 91389820234,342624437057,1287886748877,
 4852692487519,18325298874477,69344013520559]