# A149903 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 14
4 47
5 163
6 587
7 2197
8 8502
9 33375
10 133304
11 542650
12 2233956
13 9279163
14 38962506
15 165122173
16 703984127
17 3020900731
18 13051779861
19 56676234344
20 247160539208
21 1083014298642
22 4765947405530
23 21042946045519
24 93222182853153
25 414404313407641
26 1847436708413576
27 8256834170357613