# A123307 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 44
4 312
5 2776
6 30312
7 397728
8 6151768
9 110306160
10 2260463464
11 52304514912
12 1352534122104
13 38742215685776
14 1219910431007656
15 41945588389187712
16 1565744883592488856
17 63123204175617586000