# A150003 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 17
4 60
5 216
6 846
7 3378
8 13471
9 55966
10 235362
11 985219
12 4229588
13 18306710
14 78859172
15 345683311
16 1524069221
17 6691150026
18 29757260250
19 132901102923
20 591431979600
21 2658213887242
22 11986371888040
23 53884698804024
24 244154568785732
25 1109127744084492
26 5025475273411278
27 22916851970688849