# A127697 (b-file synthesized from sequence entry)
0 1
1 1
2 0
3 0
4 0
5 0
6 2
7 32
8 368
9 3984
10 44304
11 521606
12 6564318
13 88422296
14 1272704694
15 19521035238
16 318120059458
17 5491779703870
18 100150978723568
19 1924351621839740
20 38864316540425434