# A149305 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 11
4 48
5 157
6 707
7 2547
8 11728
9 44793
10 209515
11 830425
12 3928512
13 15975975
14 76204982
15 315911451
16 1516208552
17 6380856199
18 30770097293
19 131072626339
20 634440420834
21 2729589294471
22 13252591412098
23 57494028166843
24 279850008278954
25 1222697025739077
26 5964136075927073
27 26217164510751277