# A149427 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 44
5 150
6 548
7 1979
8 7324
9 27074
10 101620
11 381338
12 1444860
13 5478476
14 20902380
15 79824913
16 306175148
17 1175699494
18 4528970884
19 17465198198
20 67512268620
21 261240684772
22 1012744843508
23 3929870352586
24 15272109227396
25 59401882159868
26 231326540050700
27 901564182638872
28 3517261162906916