# A148388 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 16
5 51
6 175
7 587
8 2128
9 7800
10 29627
11 112965
12 437356
13 1708992
14 6786643
15 27181584
16 109870626
17 446436891
18 1826522803
19 7521234588
20 31168555884
21 129805992237
22 542972032376
23 2280107924147
24 9614642418922
25 40701846220612
26 172919505735539
27 736924493782813
28 3149528055432525