# A149931 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 15
4 49
5 165
6 574
7 2096
8 7770
9 29093
10 111299
11 432096
12 1686763
13 6643900
14 26470088
15 106027415
16 426480004
17 1727954672
18 7039352696
19 28758827564
20 117983800177
21 486309061479
22 2009971415306
23 8328318656768
24 34629055033797
25 144380115576263
26 603088757582742
27 2525202323367950