# A149168 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 9
4 42
5 130
6 590
7 2065
8 9590
9 36246
10 169302
11 662508
12 3151302
13 12716418
14 60766134
15 249975297
16 1204668894
17 5046138526
18 24387184250
19 103327379584
20 502209024746
21 2152035376998
22 10480335520954
23 45276651995848
24 221246448525258
25 963621977231330
26 4715103886462790
27 20657384214505530