# A062415 (b-file synthesized from sequence entry)
1 1
2 0
3 1
4 2
5 6
6 18
7 54
8 168
9 543
10 1819
11 6284
12 22305
13 81085
14 301185
15 1140759
16 4398268
17 17237268
18 68582448
19 276723505
20 1131245762
21 4681484414
22 19597666672
23 82933899715
24 354575503930
25 1530739734801
26 6669583434025
27 29316248173094