# A149728 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 75
5 289
6 1321
7 5603
8 26151
9 115545
10 546467
11 2476781
12 11824411
13 54562395
14 262245791
15 1225932563
16 5921776307
17 27954464511
18 135555532109
19 644771630961
20 3136297717081
21 15007918416499
22 73187078083773
23 351930016225887
24 1719847828600187
25 8303424758407139
26 40650829603059627
27 196922384481104843