# A149330 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 39
5 148
6 550
7 2073
8 8163
9 32415
10 128870
11 521964
12 2131786
13 8718262
14 35959256
15 149267043
16 620741014
17 2592823626
18 10879365183
19 45738855833
20 192807224404
21 815333606093
22 3454225929696
23 14661217666256
24 62368650443349
25 265747561015488
26 1133948758531347
27 4846603982947246