# A150049 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 18
4 61
5 214
6 793
7 2992
8 11603
9 45748
10 183769
11 746990
12 3071538
13 12748293
14 53393963
15 225310723
16 957057631
17 4089170129
18 17567378065
19 75844457539
20 328890705035
21 1431898090654
22 6257271584888
23 27438438709466
24 120700011905225
25 532496061724533
26 2355605307331792
27 10447128472323035