# A151287 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 21
4 76
5 290
6 1148
7 4627
8 19038
9 79554
10 336112
11 1435522
12 6184704
13 26838474
14 117247440
15 515135847
16 2274656290
17 10090187786
18 44940868940
19 200897459804
20 901082056408
21 4053912011322
22 18289272082952
23 82724956638634
24 375064515961744
25 1704237546984170
26 7759645793395368
27 35398085705004882