# A148759 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 29
5 78
6 338
7 1058
8 4686
9 15803
10 71729
11 253562
12 1169404
13 4288926
14 19974730
15 75412117
16 353859401
17 1366111116
18 6451741800
19 25355370298
20 120372620960
21 480181343782
22 2289045790648
23 9247921966268
24 44237902037162
25 180665568976249
26 866824352303161
27 3573205164846309
28 17188580145141317