# A047068 (b-file synthesized from sequence entry)
0 1
1 3
2 7
3 12
4 30
5 99
6 476
7 1966
8 9690
9 41343
10 177545
11 735854
12 2982553
13 12147231
14 49062103
15 197792469
16 794236626
17 3176408470
18 12689052371
19 50613185496
20 201709743301
21 803183013778
22 3195281754810
23 12704754084829
24 50492469949396
25 200609143365951
26 796829906416550