# A056427 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 0
5 6
6 150
7 400
8 4080
9 15480
10 127812
11 269340
12 3493530
13 5777190
14 57262050
15 210945176
16 1030384035
17 2493913170
18 32176432430
19 51785999300
20 562228198086
21 1805427491520
22 10438821574410
23 22865672706000