# A127847 (b-file synthesized from sequence entry)
0 0
1 1
2 20
3 1344
4 348160
5 357564416
6 1465657589760
7 24017731997138944
8 1574098141758535761920
9 412645105639632468417970176
10 432690992231222540584116394393600
11 1814838857553600260569028862094736359424
12 30447948962887853884238295543591323273401466880