# A148715 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 24
5 70
6 264
7 871
8 3427
9 12155
10 49471
11 184280
12 766809
13 2960544
14 12533294
15 49710976
16 213269188
17 864022759
18 3746852106
19 15440886655
20 67553784034
21 282328209955
22 1244366623559
23 5262103516706
24 23339496398318
25 99687654498177
26 444564154370691
27 1915211250088611
28 8581594213513618