# A126406 (b-file synthesized from sequence entry)
0 1
1 19
2 89
3 425
4 2043
5 9861
6 47723
7 231399
8 1123605
9 5461905
10 26573735
11 129379137
12 630262495
13 3071700043
14 14976139061
15 73039059807
16 356304015623
17 1738508587487
18 8484132138387
19 41409427571489
20 202134928523711