# A131467 (b-file synthesized from sequence entry)
1 1
2 2
3 5
4 12
5 34
6 116
7 449
8 1897
9 8469
10 38959
11 182511
12 865612
13 4140438
14 19937335
15 96519210
16 469387311
17 2291623939
18 11226534301
19 55165698564
20 271816734576
21 1342610043518