# A150050 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 18
4 61
5 216
6 805
7 3106
8 12273
9 49713
10 204584
11 856073
12 3627081
13 15541148
14 67265699
15 293557472
16 1291371759
17 5718657166
18 25482111083
19 114180541557
20 514173146013
21 2326225644455
22 10568079142209
23 48198378627602
24 220604026242275
25 1013030819655013
26 4666248466740808
27 21554720609186250