# A149539 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 13
4 51
5 179
6 707
7 2631
8 10657
9 41565
10 169871
11 679473
12 2811927
13 11431875
14 47657045
15 196290401
16 823740077
17 3422948805
18 14440656985
19 60463251011
20 256164359217
21 1078817656205
22 4587846008299
23 19416320438649
24 82826258472915
25 351972270623525
26 1505603231596009
27 6420270536168731