# A107031 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 4
4 7
5 12
6 25
7 56
8 145
9 422
10 1389
11 5072
12 20283
13 87996
14 412663
15 2087868
16 11361831
17 66155642
18 409567833
19 2680486870
20 18465061963
21 133504614880
22 1011121118741
23 8008145020804
24 66201411633209
25 570006877641976