# A124499 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 10
5 24
6 62
7 160
8 425
9 1140
10 3105
11 8528
12 23643
13 66008
14 185526
15 524384
16 1489810
17 4251852
18 12184745
19 35048405
20 101156752
21 292865417
22 850314803
23 2475327088
24 7223400899
25 21126670372
26 61920289652
27 181838859665