# A137199 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 5
4 9
5 25
6 57
7 141
8 337
9 817
10 1969
11 4757
12 11481
13 27721
14 66921
15 161565
16 390049
17 941665
18 2273377
19 5488421
20 13250217
21 31988857
22 77227929
23 186444717
24 450117361
25 1086679441
26 2623476241
27 6333631925
28 15290740089
29 36915112105
30 89120964297