# A074441 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 6
5 60
6 300
7 1296
8 6048
9 30240
10 159408
11 883872
12 5018112
13 28304640
14 157697280
15 876311654
16 4895520768
17 27554100480
18 156139902720
19 889181991936
20 5078255822436
21 29046943180800
22 166354131141818
23 954240788994048
24 5484206701412352
25 31581437286776820