# A149348 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 42
5 153
6 593
7 2333
8 9522
9 39283
10 165815
11 706828
12 3058009
13 13331249
14 58754207
15 260519211
16 1164703413
17 5233155799
18 23664405546
19 107456289612
20 490466225257
21 2246496796421
22 10333356366661
23 47673400810091
24 220721796088564
25 1024559018474286
26 4770112516366437
27 22258699966303098