# A149727 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 75
5 289
6 1319
7 5599
8 26119
9 115565
10 546181
11 2479009
12 11826313
13 54632367
14 262421783
15 1227762805
16 5927841717
17 27999421111
18 135725203143
19 645839470791
20 3140610933561
21 15032660778051
22 73290799948377
23 352492126056567
24 1722254570888947
25 8315990976797781
26 40705284451722057
27 197199319886308395