# A149339 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 40
5 151
6 573
7 2233
8 9134
9 37319
10 156741
11 667054
12 2860003
13 12451013
14 54546675
15 240872936
16 1072716219
17 4799044185
18 21612759421
19 97809065210
20 444495198056
21 2029640845007
22 9299375495917
23 42763721937159
24 197309308044494
25 912930646489117
26 4236548432117128
27 19709480208088418