# A056378 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 12
5 60
6 792
7 1404
8 10716
9 31200
10 205032
11 349956
12 3727932
13 5065804
14 41574312
15 127199028
16 517290132
17 1041517620
18 11195637720
19 15012935676
20 135825699612
21 363040469732
22 1746670165416
23 3181465294092