# A271823 (b-file synthesized from sequence entry)
1 4
2 0
3 2
4 7
5 24
6 84
7 300
8 1089
9 4004
10 14872
11 55692
12 209950
13 795872
14 3031032
15 11589240
16 44462565
17 171085500
18 660009840
19 2551955340
20 9887121090
21 38374857840
22 149184555000
23 580807904040
24 2264193450090
25 8837215647624
26 34529741789904
27 135054066707000