# A304781 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 21
4 75
5 274
6 1016
7 3807
8 14377
9 54627
10 208584
11 799669
12 3076167
13 11867511
14 45897145
15 177888715
16 690770763
17 2686879415
18 10466761637
19 40828165464
20 159453481037
21 623427464093
22 2439907421914
23 9557831470082
24 37472409664888
25 147028505564603
26 577302980976146