# A354251 (b-file synthesized from sequence entry)
0 1
1 6
2 726
3 365052
4 481186836
5 1312477120944
6 6422029618230000
7 51225621215200895520
8 621881012244669445985760
9 10911233517605729917096273920
10 265743399210784245852461349120000
11 8697920910678436598411074217669652480