# A149938 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 15
4 49
5 168
6 608
7 2300
8 8924
9 35440
10 144058
11 595413
12 2493996
13 10587961
14 45467314
15 197028767
16 861179094
17 3794348630
18 16830451472
19 75106043179
20 337098044697
21 1520780317049
22 6892118979468
23 31369336796327
24 143347713844507
25 657407221930884
26 3025011229522799
27 13963293967834988