# A268208 (b-file synthesized from sequence entry)
0 1
1 3
2 12
3 52
4 236
5 1108
6 5340
7 26276
8 131484
9 667108
10 3424108
11 17748564
12 92776716
13 488527284
14 2588907708
15 13797337668
16 73901315644
17 397609958596
18 2147904635340
19 11645489540468
20 63349140877356
21 345651184335892
22 1891209255293852