# A149641 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 15
4 71
5 235
6 1147
7 4261
8 20885
9 81049
10 399677
11 1609593
12 7961105
13 32824569
14 162734865
15 683496555
16 3394132835
17 14457881135
18 71884823559
19 309701765151
20 1541308824347
21 6702318246579
22 33380693562987
23 146283366386803
24 728994078707843
25 3215695886993247
26 16032946387905691
27 71123532628247839