# A131824 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 7
4 24
5 86
6 316
7 1177
8 4424
9 16744
10 63724
11 243618
12 934870
13 3598960
14 13892776
15 53756263
16 208434024
17 809658440
18 3150218032
19 12274694280
20 47890456576
21 187068828772
22 731511810152
23 2863308366462
24 11217762520246
25 43984983838966