# A149940 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 15
4 49
5 170
6 619
7 2316
8 8807
9 34064
10 133999
11 533104
12 2138252
13 8645140
14 35208465
15 144247477
16 594033854
17 2457732830
18 10209721069
19 42566281522
20 178065201645
21 747148601038
22 3143382071022
23 13257330682170
24 56042111023881
25 237404352309975
26 1007627536356778
27 4284395710494869