# A151187 (b-file synthesized from sequence entry)
0 1
1 3
2 12
3 51
4 229
5 1057
6 4973
7 23707
8 114084
9 552863
10 2693562
11 13177746
12 64682128
13 318329991
14 1570030555
15 7757317348
16 38384755215
17 190172212694
18 943178242919
19 4682003520932
20 23259791365273
21 115629962700026
22 575158307708094
23 2862364197846018
24 14251344892802178
25 70983481869982844
26 353679253984093680