# A153985 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 10
4 45
5 327
6 2795
7 37386
8 708255
9 18674478
10 714577926
11 38756649867
12 2991760323799
13 329930606705391
14 51795338953514297
15 11590318613952416039
16 3697221054959107433421
17 1680594967102679237735428