# A148685 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 22
5 66
6 227
7 768
8 2771
9 10025
10 37661
11 142117
12 548827
13 2135363
14 8429552
15 33539945
16 134793466
17 545473164
18 2224521240
19 9126088552
20 37669774713
21 156291183756
22 651703333129
23 2729564106197
24 11480817576072
25 48475175596266
26 205419727220096
27 873413070037042
28 3725364574591882