# A150280 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 23
4 90
5 361
6 1512
7 6467
8 27930
9 122212
10 540391
11 2404864
12 10769805
13 48506857
14 219402663
15 996212886
16 4539567631
17 20747068325
18 95069654864
19 436711353147
20 2010400939993
21 9272804634623
22 42847293584737
23 198311279922109
24 919220183569678
25 4266742167891222
26 19830467018669210
27 92275476961692393