# A047065 (b-file synthesized from sequence entry)
3 1
4 4
5 14
6 50
7 180
8 651
9 2387
10 8833
11 32981
12 123991
13 468476
14 1778564
15 6779824
16 25939287
17 99558312
18 383146247
19 1478074248
20 5714228324
21 22133961135
22 85885304838
23 333778557727
24 1299016042584
25 5062113733182
26 19749838547551
27 77137907898735
28 301582958980900