# A090962 (b-file synthesized from sequence entry)
1 1
2 8
3 207
4 40
5 7520
6 38880
7 2050496
8 14680064
9 983222784
10 9000000000
11 733008370688
12 8173092077568
13 784798672805888
14 10318292052303872
15 1141809497781288960
16 1025031833202524160
17 2183733606400887160832