# A150023 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 18
4 67
5 258
6 1054
7 4397
8 18726
9 81161
10 357501
11 1591280
12 7141591
13 32375055
14 147738932
15 677987483
16 3129540083
17 14517637716
18 67614550769
19 316096156970
20 1483236166858
21 6980705178775
22 32943969161726
23 155892741042358
24 739453402716752
25 3514857540660917
26 16741114397897829
27 79889936502475096