# A211371 (b-file synthesized from sequence entry)
0 0
1 1
2 1
3 3
4 7
5 29
6 131
7 585
8 3083
9 17089
10 97987
11 607977
12 3926731
13 26344001
14 185908739
15 1358432937
16 10279616891
17 80819893393
18 655374770131
19 5482528852761
20 47329769940331
21 420061520283617
22 3832533793409027
23 35926633641149865
24 345280194806563931