# A276409 (b-file synthesized from sequence entry)
0 1
1 0
2 2
3 2
4 6
5 24
6 44
7 136
8 298
9 914
10 2462
11 6464
12 17740
13 47840
14 133618
15 366162
16 1011190
17 2801144
18 7775916
19 21680712
20 60443514
21 168963010
22 472975278
23 1326349568
24 3725180524
25 10475012672
26 29494512354
27 83141905570
28 234634612198
29 662840458840
30 1874315939756