# A149317 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 11
4 52
5 170
6 820
7 2959
8 14514
9 55611
10 274519
11 1091963
12 5413275
13 22125974
14 109968669
15 458527130
16 2282677742
17 9666067566
18 48176053055
19 206527439304
20 1030152690801
21 4460625399845
22 22262288594871
23 97203545438273
24 485331216939480
25 2134048347102848
26 10658501929003342
27 47149574060250334