# A148180 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 12
5 28
6 92
7 251
8 860
9 2513
10 9147
11 28003
12 104286
13 332940
14 1264621
15 4143576
16 16059654
17 53812043
18 210796710
19 719697420
20 2851086259
21 9873316114
22 39477178907
23 138480427194
24 557399401255
25 1976326100848
26 8008908870844
27 28656426926198
28 116748517621235
29 421186490480246
30 1723888841623296