# A113992 (b-file synthesized from sequence entry)
0 1
1 8
2 46
3 248
4 1366
5 7976
6 50186
7 342584
8 2541682
9 20478832
10 178809686
11 1687157648
12 17149281446
13 187185819536
14 2187084736978
15 27270946449584
16 361839376952194
17 5094730546999608
18 75927073509816766
19 1194793354659948104