# A180070 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 12
5 44
6 116
7 374
8 1428
9 5960
10 26016
11 120570
12 590598
13 3065372
14 16566508
15 92827128
16 542485764
17 3298228302
18 20696614200