# A163135 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 20
5 69
6 245
7 885
8 3235
9 11923
10 44211
11 164694
12 615721
13 2308499
14 8675121
15 32661637
16 123161206
17 465018949
18 1757672820
19 6649722003
20 25177228890
21 95390000028
22 361616383623
23 1371545371027
24 5204283449684
25 19754979558587