# A309308 (b-file synthesized from sequence entry)
1 1
2 12
3 60
4 420
5 4620
6 360
7 1021020
8 19399380
9 446185740
10 13860
11 401120980260
12 2520
13 608500527054420
14 26165522663340060
15 180180
16 65178316954380089460
17 3845520700308425278140
18 234576762718813941966540
19 15716643102160534111758180
20 27720
21 3063060
22 6435289534681345815798169108260