# A149780 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 19
4 81
5 347
6 1537
7 6915
8 31745
9 146847
10 686295
11 3227131
12 15264785
13 72557201
14 346320677
15 1658794109
16 7970395611
17 38398699959
18 185435551327
19 897396788319
20 4351021199669
21 21131609339463
22 102786350770703
23 500653177144531
24 2441657404210523
25 11921473778492143
26 58268218891784893
27 285071230153468749