# A159602 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 26
5 152
6 1202
7 12840
8 184060
9 3552960
10 92338448
11 3237738008
12 153574021372
13 9872941474544
14 862850471831896
15 102720981260693424
16 16701084112350547436
17 3715705202756433837504
18 1133547354784950481434016