# A150064 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 18
4 63
5 226
6 870
7 3365
8 13697
9 55917
10 235493
11 991616
12 4287439
13 18531073
14 81564725
15 358571572
16 1602215627
17 7152092988
18 32311542880
19 145790688544
20 665088946686
21 3031019012280
22 13931089053070
23 63959612298966
24 295972677188241
25 1368411197961976
26 6366687361131662
27 29595489020917756