# A111783 (b-file synthesized from sequence entry)
9 1
10 90
11 5005
12 223740
13 8886735
14 329819490
15 11775438675
16 411859047600
17 14282642924550
18 495142102154700
19 17259324931198350
20 607418587742967000
21 21648370208790575250
22 783042495355599979500
23 28791389550204705674250