# A049172 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 11
5 45
6 195
7 887
8 4169
9 20093
10 98757
11 493123
12 2494491
13 12756393
14 65838591
15 342513423
16 1794185745
17 9455438585
18 50097517625
19 266696171475
20 1425833490011
21 7652256085781
22 41211824095067
23 222653745911847