# A133316 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 8
4 54
5 544
6 7508
7 133704
8 2943194
9 77589536
10 2391477804
11 84582890704
12 3382005372970
13 151034046369696
14 7458091839548356
15 403808650013237224
16 23801728042233670770
17 1517930142778063770304
18 104179592763803229618620