# A151289 (b-file synthesized from sequence entry)
0 1
1 2
2 7
3 21
4 80
5 267
6 1042
7 3655
8 14400
9 51960
10 205770
11 756169
12 3003754
13 11179972
14 44496878
15 167181919
16 666257284
17 2521360818
18 10057256094
19 38278262216
20 152783755958
21 584199222356
22 2332875408218
23 8954456162165
24 35770374449310
25 137743370071244
26 550391555936678
27 2125263063052980