# A256019 (b-file synthesized from sequence entry)
1 1
2 1
3 9
4 252
5 16380
6 2063880
7 447861960
8 154064514240
9 79035095805120
10 57695619937737600
11 57753315557675337600
12 76927416322823549683200
13 133007502822161917402252800
14 292350491203111894450151654400
15 802502098352542150265666291328000