# A174826 (b-file synthesized from sequence entry)
0 1
1 3
2 1260
3 471517200
4 550527639742080000
5 5190428913555819988454400000000
6 850897011688550259860209488988778496000000000000
7 4613713285873452716084822982464795709127827429408768000000000000000000