# A149173 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 10
4 34
5 116
6 414
7 1520
8 5801
9 22425
10 88356
11 354015
12 1436161
13 5883984
14 24364534
15 101756744
16 428049139
17 1812818242
18 7726376444
19 33107102100
20 142560071609
21 616726081964
22 2679247585672
23 11683377518921
24 51128959743600
25 224495464642072
26 988696444896896
27 4366576279940710
28 19336461231673449