# A103933 (b-file synthesized from sequence entry)
1 1
2 4
3 9
4 48
5 150
6 90
7 490
8 2240
9 11340
10 2520
11 152460
12 83160
13 2342340
14 2522520
15 540540
16 11531520
17 104144040
18 110270160
19 737176440
20 775975200
21 162954792
22 56904848
23 1368302936
24 2141691552
25 111546435000
26 116008292400
27 1084231348200