# A072397 (b-file synthesized from sequence entry)
1 2
2 21
3 8
4 6765
5 2584
6 144
7 832040
8 86267571272
9 46368
10 14930352
11 30960598847965113057878492344
12 4807526976
13 160500643816367088
14 498454011879264
15 16641027750620563662096
16 51680708854858323072
17 34507973060837282187130139035400899082304280