# A337594 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 58
4 920
5 21176
6 654960
7 26114768
8 1298070912
9 78359732608
10 5630565514496
11 473796572027648
12 46060380961356800
13 5114737212582603776
14 642502387594286036992
15 90542358999393528670208
16 14209873001490130067095552
17 2467784343879850163370295296
18 471558856613839054976849608704