# A128045 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 6
5 2
6 5
7 360
8 2520
9 1680
10 15120
11 2700
12 11880
13 9979200
14 8648640
15 18345600
16 2476656000
17 27243216000
18 714714000
19 427508928000
20 1160381376000
21 1055947052160000
22 22174888095360000
23 38718058579200
24 141031842336000