# A153954 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 16
4 56
5 424
6 2979
7 43547
8 596720
9 16903736
10 450129276
11 24740929636
12 1274646618498
13 135794808093563
14 13566737103811527
15 2802238029568573488
16 542899687293133798346
17 217420519981066905114215