# A151298 (b-file synthesized from sequence entry)
0 1
1 2
2 7
3 28
4 118
5 531
6 2468
7 11803
8 57684
9 286757
10 1446170
11 7379881
12 38043130
13 197822526
14 1036473665
15 5466733758
16 29003678329
17 154689197699
18 828926263122
19 4460905720669
20 24099684585681
21 130657255240514
22 710658902564016
23 3876874286092771
24 21207804910818281
25 116309469589961213
26 639383247986188829