# A371230 (b-file synthesized from sequence entry)
0 1
1 0
2 2
3 3
4 128
5 750
6 29964
7 377160
8 15795072
9 329631120
10 15001287120
11 449174341440
12 22551082739712
13 885381886509120
14 49302509206648320
15 2391802812599316480
16 147728974730632012800
17 8502972330919072688640
18 580806950108814502345728